Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Fix Version/s: 1.2.0 beta 1
    • Component/s: None
    • Labels:

      Description

      Under size-tiered compaction, you can generate large sstables that compact infrequently. With expiring columns mixed in, we could waste a lot of space in this situation.

      If we kept a TTL EstimatedHistogram in the sstable metadata, we could do a single-sstable compaction aginst sstables with over 20% expired data.

        Attachments

        1. cassandra-1.1-3442.txt
          35 kB
          Yuki Morishita
        2. 3442-v3.txt
          42 kB
          Jonathan Ellis
        3. 3442-track-tombstones.txt
          51 kB
          Yuki Morishita

          Activity

            People

            • Assignee:
              yukim Yuki Morishita
              Reporter:
              jbellis Jonathan Ellis
              Reviewer:
              Jonathan Ellis
            • Votes:
              1 Vote for this issue
              Watchers:
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              Dates

              • Created:
                Updated:
                Resolved: