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Posted to dev@hbase.apache.org by "Huaxiang Sun (Jira)" <ji...@apache.org> on 2021/09/03 16:41:00 UTC

[jira] [Created] (HBASE-26255) Add an option to use region location from meta table in TableSnapshotInputFormat

Huaxiang Sun created HBASE-26255:
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             Summary: Add an option to use region location from meta table in TableSnapshotInputFormat
                 Key: HBASE-26255
                 URL: https://issues.apache.org/jira/browse/HBASE-26255
             Project: HBase
          Issue Type: Improvement
          Components: mapreduce
    Affects Versions: 2.3.6
            Reporter: Huaxiang Sun
            Assignee: Huaxiang Sun


TableSnapshotInputFormat currently calculates block locality of a region to decide the best location to run the task. While this works for a small scale table snapshot, we found that for a table snapshot with many regions, the locality calculation takes too much time. 

In the case of a table with high locality, we can use region location from meta table to decide a snapshot region's location. Add an option to support it.



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