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  1. Couchbase Server
  2. MB-40410

[Backport MB-39067 to 6.0.5] Index creation may fail in case of one or more watchers are not available

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    Description

      On GSI client, if WatchMetadata doesn't succeed for a subset of indexer nodes, the prepare create request and commit request will be sent only to the available watchers. But the planner considers all available indexer nodes for planning. If planner decides to put the index on the node for which watcher was not available, the index creation may fail.

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          is a backport of

          Bug - A problem which impairs or prevents the functions of the product. MB-39067 Index creation may fail in case of one or more watchers are not available

          • Major - Major loss of function.
          • Closed
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            amit.kulkarni Amit Kulkarni added a comment -

            QE Testing:

            1. Setup a cluster n1: kv, n1ql, index AND n2: index
            2. Rebalance.
            3. Create 1 index on node n1.
            4. Drop all incoming packets for n2:9100.
            5. Restart cbq-engine node on n1.
            6. Create an index.

            Before fix: Planner considers both nodes n1 and n2 for placement.
            After fix: Planner considers only n1 for placement as n2 is not reachable at the time.

            amit.kulkarni Amit Kulkarni added a comment - QE Testing: 1. Setup a cluster n1: kv, n1ql, index AND n2: index 2. Rebalance. 3. Create 1 index on node n1. 4. Drop all incoming packets for n2:9100. 5. Restart cbq-engine node on n1. 6. Create an index. Before fix: Planner considers both nodes n1 and n2 for placement. After fix: Planner considers only n1 for placement as n2 is not reachable at the time.
            build-team Couchbase Build Team added a comment -

            Build couchbase-server-6.0.5-3327 contains indexing commit d3dbc8e with commit message:
            MB-40410: Fix index creation if one of the indexer nodes is not connected

            build-team Couchbase Build Team added a comment - Build couchbase-server-6.0.5-3327 contains indexing commit d3dbc8e with commit message: MB-40410 : Fix index creation if one of the indexer nodes is not connected
            mihir.kamdar Mihir Kamdar (Inactive) added a comment -

            Verified on 6.0.5-3332 with the above given steps.

            mihir.kamdar Mihir Kamdar (Inactive) added a comment - Verified on 6.0.5-3332 with the above given steps.

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              amit.kulkarni Amit Kulkarni
              amit.kulkarni Amit Kulkarni
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                Resolved:

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