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  1. HBase
  2. HBASE-15542

Minimize garbage memory allocations during compaction

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Implemented
    • 2.0.0
    • None
    • Compaction
    • None

    Description

      Compactions are CPU-bound, not I/O bound. We can mitigate this by increasing number of compaction threads for small and large compactions, but excessive object allocation limits maximum number of compaction threads we can use w/o bringing down RS due to very frequent GC cycles.

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          is part of

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-15492 Memory usage optimizations

          • Major - Major loss of function.
          • Closed
          is related to

          Umbrella - An overarching type made of sub-tasks HBASE-15555 Memory Management

          • Major - Major loss of function.
          • Resolved
          requires

          Sub-task - The sub-task of the issue HBASE-15509 Avoid copy of block data in HFileBlock$Writer.finishBlock

          • Major - Major loss of function.
          • Closed
          There are no Sub-Tasks for this issue.

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              Unassigned Unassigned
              vrodionov Vladimir Rodionov
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              Dates

                Created:
                Updated:
                Resolved: