[jira] [Created] (HBASE-20226) Performance Improvement Taking Large Snapshots In Remote Filesystems

["Saad Mufti (JIRA)" <ji...@apache.org>]

Saad Mufti created HBASE-20226:
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             Summary: Performance Improvement Taking Large Snapshots In Remote Filesystems
                 Key: HBASE-20226
                 URL: https://issues.apache.org/jira/browse/HBASE-20226
             Project: HBase
          Issue Type: Improvement
          Components: snapshots
    Affects Versions: 1.4.0
         Environment: HBase 1.4.0 running on an AWS EMR cluster with the hbase.rootdir set to point to a folder in S3 
            Reporter: Saad Mufti


When taking a snapshot of any table, one of the last steps is to delete the region manifests, which have already been rolled up into a larger overall manifest and thus have redundant information.

This proposal is to do the deletion in a thread pool bounded by hbase.snapshot.thread.pool.max . For large tables with a lot of regions, the current single threaded deletion is taking longer than all the rest of the snapshot tasks when the Hbase data and the snapshot folder are both in a remote filesystem like S3.

I have a patch for this proposal almost ready and will submit it tomorrow for feedback, although I haven't had a chance to write any tests yet.



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