Uploaded image for project: 'Cassandra'
  1. Cassandra
  2. CASSANDRA-14291

Nodetool command to recreate SSTable components

    XMLWordPrintableJSON

    Details

      Description

      Need a JMX/Nodetool command to recreate components for SSTables without re-writing the data files.

      Possible implementation idea:
      Create a nodetool (recreate|regen)component command that would enable you to recreate specific components of an SSTable, and also allow specifying SSTables or columnfamilies.
      I'd say a flag for a list of components and a flag for SSTables with keyspace.columnfamilies as positional arguments would work

      Alternatively this could become part of upgradesstables, but would likely make that command a bit bloated.

      Background:
      In CASSANDRA-11163 we changed it so summaries and bloomfilters were not regenerated or persisted on startup. This means we would rely on compactions/upgrades to regenerate the bloomfilter (or other components) after a configuration change. While this works, it's pretty inefficient on large tables just because you changed the bloomfilter size or summary chunk sizes.

        Attachments

          Activity

            People

            • Assignee:
              alex.ivakov Alexander Ivakov
              Reporter:
              KurtG Kurt Greaves
              Authors:
              Alexander Ivakov
            • Votes:
              1 Vote for this issue
              Watchers:
              7 Start watching this issue

              Dates

              • Created:
                Updated: