Cassandra
  1. Cassandra
  2. CASSANDRA-5371

Perform size-tiered compactions in L0 ("hybrid compaction")

    Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Fix Version/s: 2.0 beta 1
    • Component/s: Core
    • Labels:
      None

      Description

      If LCS gets behind, read performance deteriorates as we have to check bloom filters on man sstables in L0. For wide rows, this can mean having to seek for each one since the BF doesn't help us reject much.

      Performing size-tiered compaction in L0 will mitigate this until we can catch up on merging it into higher levels.

        Issue Links

          Activity

          Jonathan Ellis created issue -
          T Jake Luciani made changes -
          Field Original Value New Value
          Attachment HybridCompactionStrategy.java [ 12574880 ]
          Carl Yeksigian made changes -
          Assignee T Jake Luciani [ tjake ] Jonathan Ellis [ jbellis ]
          Reviewer tjake
          Jonathan Ellis made changes -
          Status Open [ 1 ] Resolved [ 5 ]
          Resolution Fixed [ 1 ]
          Jonathan Ellis made changes -
          Summary Perform size-tiered compactions in L0 Perform size-tiered compactions in L0 ("hybrid compaction")
          Jonathan Ellis made changes -
          Link This issue is duplicated by CASSANDRA-3854 [ CASSANDRA-3854 ]

            People

            • Assignee:
              Jonathan Ellis
              Reporter:
              Jonathan Ellis
              Reviewer:
              T Jake Luciani
            • Votes:
              0 Vote for this issue
              Watchers:
              10 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development