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  1. Couchbase Server
  2. MB-61387

Track first snapshot optimisation per keyspace in mutation stream reader

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    Description

      Currently, mutation stream reader tracks the enablement of first snapshot optimisation per stream. This can lead to an issue if first snap optimisation can be enabled for one keyspace and should not be enabled for other keyspace  (See linked customer ticket). 

      If the first keyspace that starts the stream enables the first snapshot optimisation, it will be applicable for all keyspaces which follow. This is incorrect and can lead to duplicate rows in the index.

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          backports to

          Bug - A problem which impairs or prevents the functions of the product. MB-61435 [BP to 7.2.5] - Track first snapshot optimisation per keyspace in mutation stream reader

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MB-61565 [BP to 7.1.5-MP] - Track first snapshot optimisation per keyspace in mutation stream reader

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-63342 First snapshot optimisation is incorrectly enabled when indexer initiates recovery after restart

          • Major - Major loss of function.
          • Open
          For Gerrit Dashboard: MB-61387
          # Subject Branch Project Status CR V
          207891,3 MB-61435 Track markFirstSnap per keyspace in stream reader neo indexing Status: MERGED +2 +1
          207893,1 MB-61435 Track markFirstSnap per keyspace in stream reader 7.1.4 indexing Status: ABANDONED 0 0
          208143,4 MB-61387 Track markFirstSnap per keyspace in stream reader unstable indexing Status: MERGED +2 +1
          208482,2 MB-61387 Disable first snap optimization for MAINT_STREAM unstable indexing Status: MERGED +2 +1
          208483,2 MB-61387 Handle stream merge with first snap optimization unstable indexing Status: MERGED +2 +1
          208506,1 MB-61435 Disable first snap optimization for MAINT_STREAM neo indexing Status: MERGED +2 +1
          208624,5 MB-61565 Disable first snap optimization for MAINT_STREAM 7.1.5 indexing Status: MERGED +2 +1
          208709,1 MB-61435 Track markFirstSnap per keyspace in stream reader 7.2.4 indexing Status: MERGED +2 +1
          208710,1 MB-61435 Disable first snap optimization for MAINT_STREAM 7.2.4 indexing Status: MERGED +2 +1
          208780,3 MB-61565 Track markFirstSnap per keyspace in stream reader 7.1.5 indexing Status: MERGED +2 +1
          209213,3 MB-61387 Track markFirstSnap per keyspace in stream reader trinity indexing Status: MERGED +2 +1
          209214,2 MB-61387 Disable first snap optimization for MAINT_STREAM trinity indexing Status: MERGED +2 +1

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              hemant.rajput Hemant Rajput
              varun.velamuri Varun Velamuri
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              Dates

                Created:
                Updated:
                Resolved:

                PagerDuty