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  1. Apache Cassandra
  2. CASSANDRA-5906

Avoid allocating over-large bloom filters

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Details

    • Improvement
    • Status: Resolved
    • Normal
    • Resolution: Fixed
    • 2.1 beta1
    • None
    • None

    Description

      We conservatively estimate the number of partitions post-compaction to be the total number of partitions pre-compaction. That is, we assume the worst-case scenario of no partition overlap at all.

      This can result in substantial memory wasted in sstables resulting from highly overlapping compactions.

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        1. 5906.txt
          205 kB
          Yuki Morishita

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              yukim Yuki Morishita
              jbellis Jonathan Ellis
              Yuki Morishita
              Jonathan Ellis
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                Created:
                Updated:
                Resolved: