Uploaded image for project: 'Aurora'
  1. Aurora
  2. AURORA-930

GC performance issues with snapshot deduplication on large clusters

    Details

    • Type: Story
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.7.0
    • Component/s: Scheduler
    • Labels:
      None
    • Sprint:
      Twitter Aurora Q4 Sprint 4, Twitter Aurora Q4 Sprint 5

      Description

      We observed very long GC pauses in our production cluster we believe are caused by the extra heap pressure caused by SnapshotDeduplicatorImpl's extra deep copy of a Snapshot object.

      Also, EntrySerializer fully buffers the full binary-encoded thrift Snapshot before writing it to the replicated log - it can avoid memory pressure by streaming instead.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                kevints Kevin Sweeney
                Reporter:
                clambert Chris Lambert
              • Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: