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  1. Couchbase Server
  2. MB-50170

Decompress pages on scan if compression config is disabled

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    Description

      If compression is disabled after being enabled for a while, then pages may remain compressed if they are not evicted and/or compacted. This can add the decompress overhead to scans. To avoid this, if a scan sees a compressed page, it should be decompressed.

       

      Note that if tryPageSwapin decompresses a page, it must not compress it after swapin. If this is not handled, we may run into MB-50063

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          akhil.mundroy Akhil Mundroy created issue -
          jliang John Liang made changes -
          Field Original Value New Value
          Issue Type Improvement [ 4 ] Bug [ 1 ]
          build-team Couchbase Build Team added a comment -

          Build couchbase-server-7.1.0-1969 contains plasma commit 7efb48f with commit message:
          MB-50170: Decompress pages on swapin if compression is disabled

          build-team Couchbase Build Team added a comment - Build couchbase-server-7.1.0-1969 contains plasma commit 7efb48f with commit message: MB-50170 : Decompress pages on swapin if compression is disabled
          akhil.mundroy Akhil Mundroy made changes -
          Resolution Fixed [ 1 ]
          Status Open [ 1 ] Resolved [ 5 ]
          ritam.sharma Ritam Sharma made changes -
          Labels plasma plasma request-dev-verify
          srinath.duvuru Srinath Duvuru added a comment -

          Unit test covers this issue.

          srinath.duvuru Srinath Duvuru added a comment - Unit test covers this issue.
          srinath.duvuru Srinath Duvuru made changes -
          Status Resolved [ 5 ] Closed [ 6 ]

          People

            akhil.mundroy Akhil Mundroy
            akhil.mundroy Akhil Mundroy
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            Dates

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              Updated:
              Resolved:

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