SEIZE THE DATA SEIZE THE DATA. 2015
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1 1 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
2 Forward-looking statements This is a rolling (up to three year) Roadmap and is subject to change without notice. This document contains forward looking statements regarding future operations, product development, product capabilities and availability dates. This information is subject to substantial uncertainties and is subject to change at any time without prior notification. Statements contained in this document concerning these matters only reflect Hewlett Packard's predictions and / or expectations as of the date of this document and actual results and future plans of Hewlett-Packard may differ significantly as a result of, among other things, changes in product strategy resulting from technological, internal corporate, market and other changes. This is not a commitment to deliver any material, code or functionality and should not be relied upon in making purchasing decisions. 2 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
3 HP confidential information This is a rolling (up to three year) Roadmap and is subject to change without notice. This Roadmap contains HP Confidential Information. If you have a valid Confidential Disclosure Agreement with HP, disclosure of the Roadmap is subject to that CDA. If not, it is subject to the following terms: for a period of 3 years after the date of disclosure, you may use the Roadmap solely for the purpose of evaluating purchase decisions from HP and use a reasonable standard of care to prevent disclosures. You will not disclose the contents of the Roadmap to any third party unless it becomes publically known, rightfully received by you from a third party without duty of confidentiality, or disclosed with HP s prior written approval. 3 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
4 Avoiding Disasters with Vertica Backup and Restore Stephen Walkauskas John Heffner August, 2015
5 Vertica Backup and Restore overview 5 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
6 Traditional database backup and restore Transaction logs Differential Backup Incremental Backup Database change history. Differences since the last full backup. Differences since the last backup (incremental or full). 6 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
7 Traditional methods don t fit Big Data Transaction logs Differential backup Grows too large and causes long recoveries Grows too large as Delta grows from last full backup Incremental backup Long recoveries and can t drop intermediate restore points All of these approaches require a periodic full backup. 7 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
8 Big data backup and restore Data files in Vertica are write-once, never modified (but like const in C++, can be deleted) Backup Restore Point 0 Restore Point 1 Catalog Catalog Data Snapshot Catalog 8 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
9 Backup and restore performance improvements 9 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
10 Backup process Some detail on how backup works currently (up to 7.1.x) Create durable snapshot. Serialize catalog. Hard link all referenced storage. Copy metadata (catalog). Transport data. Hard link if in prior restore point, else copy. Delete snapshot. Backup Restore Point 0 Restore Point 1 Catalog Catalog Snapshot Catalog 10 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
11 Performance issues with many files Common case: tables with many sparsely-populated columns and many partitions. Vertica compresses these well, but creates a lot of small files. Data copy is incremental, but filesystem operations are not. Lots of random I/O most devices do hundreds per second. Backup can hurt query performance. Two pronged approach to improving performance Create fewer files. Do fewer filesystem operations sequential rather than random I/O. 11 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
12 Create fewer files Pack small ROSes together Put index and data into the same file, get rid of containing directory. Bundle multiple columns into a single file, if ROSes sufficiently small. Partitions, projections, and local segments still use separate files. Bundled automatically at storage container creation, no rewriting or appending. File size significantly larger than filesystem metadata. clickid userid timestamp objectid dbg_info userid clickid timestamp objectid dbg_info ROS Index ROS Data Bundle Footer 12 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
13 Fewer filesystem operations New backup format using manifests Create non-durable snapshot. In-memory reference counts. Track backup location content with a manifest file. Copy only storage not in manifest. Additional benefits: No hard links allows more flexibility in backup locations. NFS mounts, MapR Possibly other filesystems or object stores (hint, hint). Restore Point 0 Catalog Backup Objects Manifest Restore Point 1 Catalog Update Read Snapshot Catalog 13 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
14 Some performance numbers Backups run on test database with large catalog: Three nodes, 119 schemas x 179 non-uniform tables. 850 GB (compressed) stored in 2.4m ROSes. Serialized catalog 4 GB. Unbundled: 4.8m files. 7.1: Hard links Backup time (shorter bars are better) Full backup 348 Minimal incremental minutes 14 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
15 Some performance numbers Backups run on test database with large catalog: Three nodes, 119 schemas x 179 non-uniform tables. 850 GB (compressed) stored in 2.4m ROSes. Serialized catalog 4 GB. Unbundled: 4.8m files. Bundled: 250k files. 7.1: Hard links Backup time (shorter bars are better) Full backup 108 (3.2x) 348 Minimal incremental 94 Bundling + manifests minutes 15 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
16 Some performance numbers Backups run on test database with large catalog: Three nodes, 119 schemas x 179 non-uniform tables. 850 GB (compressed) stored in 2.4m ROSes. Serialized catalog 4 GB. Unbundled: 4.8m files. Bundled: 250k files. 7.1: Hard links Backup time (shorter bars are better) Full backup 108 (3.2x) 348 Minimal incremental 1.1 (82x) 94 Bundling + manifests minutes 16 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
17 New backup and restore features 17 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
18 Selective object restore In Vertica 7.1.x and earlier, you must restore everything you backed up Vertica Backup Backup schema store customers products 18 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
19 Selective object restore In Vertica 7.1.x and earlier, you must restore everything you backed up Backup Vertica store store customers products customers products 19 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
20 Selective object restore In Vertica 7.1.x and earlier, you must restore everything you backed up Backup Vertica store store customers products customers products 20 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
21 Selective object restore In Vertica 7.1.x and earlier, you must restore everything you backed up Backup Restore schema Vertica store store customers products customers 21 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
22 Selective object restore In Vertica 7.1.x and earlier, you must restore everything you backed up Backup Vertica store store customers products customers products 22 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
23 Selective object restore In the next Vertica release, you can select objects to restore, schemas or tables, from a full backup Backup Vertica store store customers products customers products 23 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
24 Selective object restore In the next Vertica release, you can select objects to restore, schemas or tables, from a full backup Backup Vertica store Restore products table from schema store customers products products customers 24 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
25 Selective object restore In the next Vertica release, you can select objects to restore, schemas or tables, from a full backup Works for full and object backups Backup Vertica store store customers products customers products 25 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
26 Replicating objects between databases Replicate schemas and tables between databases New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store customers products 26 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
27 Replicating objects between databases Primary and secondary can continue with normal operations New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store customers products Replicate schema 27 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
28 Replicating objects between databases Primary and secondary can continue with normal operations A consistent snapshot is replicated to the secondary site New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products customers products 28 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
29 Replicating objects between databases Primary and secondary can continue with normal operations A consistent snapshot is replicated to the secondary site New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products customers products 29 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
30 Replicating objects between databases Primary and secondary can continue with normal operations A consistent snapshot is replicated to the secondary site New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products customers products 30 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
31 Replicating objects between databases Re-sync from primary will bring secondary consistent with the primary New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products Replicate schema customers products 31 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
32 Replicating objects between databases Re-sync from primary will bring secondary consistent with the primary New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products customers products 32 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
33 Replicating objects between databases Recover from secondary site during disasters New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products customers products 33 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
34 Replicating objects between databases Recover from secondary site during disasters New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products Replicate table customers products 34 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
35 Replicating objects between databases Recover from secondary site during disasters New York Data Center Chicago Data Center Vertica - Primary DB Vertica Secondary DB store store customers products customers products 35 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
36 Lightweight table/partition copy Lightning-fast table/partition copy without copying storage Vertica 36 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
37 Lightweight table/partition copy Lightning-fast table/partition copy without copying storage Copy partitions 2011 to 2012 from to 2 Vertica 37 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
38 Lightweight table/partition copy Storage referenced in place, no hard links, portable across file systems Copy partitions 2011 to 2012 from to 2 Vertica 2 38 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
39 Lightweight table/partition copy Storage referenced in place, no hard links, portable across file systems Copy partitions 2011 to 2012 from to 2 Vertica 2 39 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
40 Side-by-side restore In Vertica 7.1.x and earlier, you can only overwrite schemas/tables during restore Backup Vertica Back up 40 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
41 Side-by-side restore In Vertica 7.1.x and earlier, you can only overwrite schemas/tables during restore Backup Vertica 41 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
42 Side-by-side restore $ COPY FROM 4_data.csv ; Backup Vertica 42 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
43 Side-by-side restore $ SELECT DROP_PARTITION(, 1); Backup Vertica 43 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
44 Side-by-side restore $ SELECT DROP_PARTITION(, 1); OOPS, that s a mistake, I want that partition! But now I ve got new data I don t want to have to re-load. Backup Vertica 44 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
45 Side-by-side restore Now you can restore objects side-by-side without overwriting the original table Backup Vertica Restore side-byside 45 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
46 Side-by-side restore Now you can restore objects side-by-side without overwriting the original table Backup Vertica 2 46 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
47 Side-by-side restore $ select swap_partitions_between_tables (, 1, 1, _tmp ); Backup Vertica 2 47 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
48 Side-by-side restore $ DROP TABLE 2 CASCADE; Backup Vertica 48 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
49 Bootstrap Recovery review 49 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
50 Bootstrap recovery All data lost on node001 Two choice from which to recover data: buddy or backup? Backup (node001) Vertica (node002) Vertica (node001) 50 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
51 Recovery sans node restore Backup (node001) Recover buddy containers Vertica (node002) Vertica (node001) 51 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
52 Recovery sans node restore Backup (node001) Recover buddy containers Vertica (node002) Vertica (node001) 52 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
53 Recovery sans node restore Backup (node001) Recover buddy containers Vertica (node002) Vertica (node001) 53 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
54 Recovery sans node restore Backup (node001) Next Backup is not incremental Vertica (node001) 54 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
55 Bootstrap recovery All data lost on node001 Two choice from which to recover data: buddy or backup? Backup (node001) Vertica (node002) Vertica (node001) 55 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
56 Bootstrap recovery Backup (node001) Bootstrap recovery with node restore Vertica (node001) * History is needed to recover * Backup epoch must be greater than AHM 56 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
57 Bootstrap recovery Backup (node001) Bootstrap recovery with node restore Vertica (node001) * Added bonus - less load on buddy node 57 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
58 Bootstrap recovery Backup (node001) Bootstrap recovery with node restore Vertica (node001) 58 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
59 Bootstrap recovery Backup (node001) Proceed with incremental recovery Recover delta between backup epoch and current epoch Vertica (node002) Vertica (node001) 59 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
60 Bootstrap recovery Backup (node001) Next backup is incremental Vertica (node001) 60 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
61 Recovery improvements 61 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
62 Recovery review Recover delta: historical phase No locks Recover delta since backup epoch up to latest epoch Vertica (node002) Vertica (node001) 62 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
63 Recovery review Recover delta: historical phase No locks Recover delta since backup epoch up to latest epoch Vertica (node002) Vertica (node001) 63 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
64 Recovery review Recover delta: historical phase Can have multiple historical phases Starting in 7.1 INSERTS are written to RECOVERING nodes For this reason mostly only deletes are recovered after first historical phase Vertica (node002) INSERT INTO SALES VALUES ( ) Vertica (node001) 64 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
65 Recovery review Recover current: T-lock tables for consistency * Recover delta from last historical phase to current epoch INSERT INTO SALES VALUES ( ) Vertica (node002) Vertica (node001) T 65 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
66 Recovery review Recover current: T-lock tables for consistency Vertica (node002) Vertica (node001) products customers T 66 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
67 Recovery review Recover current: T-lock tables for consistency Vertica (node002) Vertica (node001) T 67 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
68 Recovery review Recover current: T-lock tables for consistency Vertica (node002) Vertica (node001) T T 68 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
69 Recovery review Recover current: T-lock tables for consistency Vertica (node002) Vertica (node001) T T T 69 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
70 Recovery review Recover current: T-lock tables for consistency Vertica (node002) Vertica (node001) T T T 70 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
71 Recovery review Recover current: T-lock tables for consistency Vertica (node002) Vertica (node001) T T T 71 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
72 Recovery review Recover current: T-lock tables for consistency Yikes! Recovery is almost done but it will fail and restart the current phase for all tables if T-lock table times out. T Vertica (node002) Vertica (node001) T T T X 72 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
73 Recovery review Recover current: T-lock tables for consistency Vertica (node002) Vertica (node001) T T T T 73 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
74 Recovery review Recover complete: Node transitions to UP SELECT SUM( ) FROM SALES GROUP BY ; Vertica (node002) Vertica (node001) 74 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
75 Recovery review Recover current: T-lock tables for consistency ERROR: Timeout locking table t Or ERROR: Found drop partition event during recovery Etc T Vertica (node002) Vertica (node001) T T T X 75 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
76 Recover by table Better to recover each table independently and localize most recovery errors to a single table Vertica (node002) Vertica (node001) 76 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
77 Recover by table Recover table s buddy containers Vertica (node002) Vertica (node001) 77 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
78 Recover by table Recover table s buddy containers Vertica (node002) Vertica (node001) 78 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
79 Recover by table Recover table s buddy containers Vertica (node002) Vertica (node001) 79 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
80 Recover by table Recover table delta: mainly deletes, as of 7.1 INSERTS go to RECOVERING node Vertica (node002) Vertica (node001) 80 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
81 Recover by table Recover table delta: mainly deletes, as of 7.1 INSERTS go to RECOVERING node Vertica (node002) Vertica (node001) 81 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
82 Recover by table Recover table delta: mainly deletes, as of 7.1 INSERTS go to RECOVERING node Vertica (node002) Vertica (node001) 82 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
83 Recover by table Recover table current: T-lock table for consistency * Notice: No locks on to this point Vertica (node002) Vertica (node001) 83 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
84 Recover by table Recover table current: T-lock table for consistency * T-lock compatible with INSERT / COPY but not DELETE or DDL Vertica (node002) Vertica (node001) products customers T 84 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
85 Recovery by table Recover table current: T-lock table for consistency Vertica (node002) Vertica (node001) products customers T 85 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
86 Recover by table Recover table current: T-lock table for consistency Vertica (node002) Vertica (node001) T 86 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
87 Recover by table Recover table complete: - Table transitions to UP on RECOVERING node - T-lock released - Table participates in ALL DML and DDL - UP segment on RECOVERING node not used for queries DELETE FROM WHERE ; Vertica (node002) Vertica (node001) UP 87 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
88 Recover by table Repeat process for each table Vertica (node002) Vertica (node001) UP UP 88 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
89 Recover by table Repeat process for each table Vertica (node002) Vertica (node001) UP UP UP 89 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
90 Recover by table Repeat process for each table Vertica (node002) Vertica (node001) UP UP UP UP 90 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
91 Recover by table Recover complete: Node transitions to UP SELECT SUM( ) FROM SALES GROUP BY ; Vertica (node002) Vertica (node001) 91 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
92 Team People to corner at the reception Development Jing Xu John Heffner Tharanga Gameathige Stephen Walkauskas Product Management Ignacio Hwang QA Afeso Ologun George Young Michelle Qian Pan Ye Qinong Liu 92 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
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SEIZE THE DATA. 2015 SEIZE THE DATA. 2015
1 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. BIG DATA CONFERENCE 2015 Boston August 10-13 Vertica Backup and Restore
SEIZE THE DATA. 2015 SEIZE THE DATA. 2015
1 Copyright 2015 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. BIG DATA CONFERENCE 2015 Boston August 10-13 Predicting and reducing deforestation
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