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  1. HBase
  2. HBASE-3404

Compaction Ordering for Bulk Import Files

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.90.0, 0.90.1, 0.92.0
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      We got into an issue today where we were using HFileOutputFormat to perform an incremental load on an already-large cluster. Because bulk-loaded files don't have a sequence ID, they are put in the front of the StoreFile list. This resulted in the following StoreFile ordering

      2GB (bulk) => 25GB => 2GB => ...

      So this triggered a 30+GB major compaction for every single region. Optimally, we would like bulk import files to be ordered in the compaction list at the time of insertion so this can be a much smaller compaction and rely on StoreFile age for major compaction trigger.

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              • Assignee:
                nspiegelberg Nicolas Spiegelberg
                Reporter:
                nspiegelberg Nicolas Spiegelberg
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                • Created:
                  Updated:
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