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  1. Core Server
  2. SERVER-13024

Clear the 'jumbo' flag from the chunk document when the chunk is no longer over-sized

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Details

    • New Feature
    • Status: Needs Scheduling
    • Major - P3
    • Resolution: Unresolved
    • None
    • None
    • Sharding
    • None
    • Sharding EMEA

    Description

      Currently, if the balancer goes to split a chunk and cannot, the chunk gets marked as 'jumbo', which will prevent the balancer from migrating that chunk and from trying to split it again.

      If in the future, documents are deleted from that shard key range or the cluster's chunksize setting changes, the chunk itself may no longer be 'jumbo', but MongoDB will not clear the 'jumbo' flag from that chunk.

      If you have a system where documents are short-lived (say, one week) and are then removed from the system, this will result in a system with a large number of chunks that are incorrectly marked 'jumbo'. In addition, the number of 'jumbo' chunks will grow over time.

      Attachments

        Issue Links

          is duplicated by

          Question - SERVER-36059 Can't move jumbo chunks even after changing chunk size

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. DOCS-5701 Jumbo chunks are never cleared automatically

          • Major - P3 - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. SERVER-13806 Need better detection and reporting of the existence of jumbo chunks

          • Major - P3 - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. SERVER-21931 Only mark chunks as jumbo if split fails because the chunk is too large

          • Major - P3 - Major loss of function.
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. SERVER-40435 A clearJumboChunk command to clear the jumbo flag

          • Major - P3 - Major loss of function.
          • Closed
          related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-11629 Allow Jumbo Chunks to be Drained / Migrated

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-14121 Store size for chunk in config.chunks.

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. DOCS-4163 Document how to manually reset Jumbo flag on chunks

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Activity

            People

              backlog-server-sharding-emea Backlog - Sharding EMEA
              william.zola@10gen.com William Zola
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              Dates

                Created:
                Updated: