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  1. Couchbase Server
  2. MB-46007

Metadata store that is immediately consistent in which to store Index Definitions

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Details

    • Improvement
    • Status: Open
    • Critical
    • Resolution: Unresolved
    • 5.0.0
    • Morpheus
    • secondary-index
    • Security Level: Public
    • Cluster Setup:
      2 nodes

      Node 1: kv index n1ql
      Node 2: index

    Description

      We need a metadata store that is immediately consistent and indexing should move to use it in which to store indexing definitions.


      Original Problem:
      [GSI] Indexes can be created with duplicate index_names when one of the indexer node is in failed over state

      Steps:
      1. Configure cluster. Create bucket default and load the bucket with 10k items.
      Sample document:

      {
        "name": "pymc0",
        "age": 0,
        "index": 0,
        "body": "VTKGNKUHMP"
      }
      

      2. Create index ind_3 on default(name). It gets created on node 2.
      3. Failover Node 2.
      4. Create index ind_3 on default(age). It gets created on node 1.
      5. Rebalance in Node 2 with full recovery.

      Now there are 2 indexes with same name "ind_3" with different index definitions.
      when dropping ind_3, later one gets dropped. There is no way of controlling drop behaviour in such cases.

      Expectation is, indexes with duplicate index_names shouldn't be allowed to be created.

      Snapshot attached.
      Log Location:

      https://s3.amazonaws.com/bugdb/jira/duplicate_indexes/collectinfo-2016-12-19T082442-ns_1%4010.111.170.101.zip
      https://s3.amazonaws.com/bugdb/jira/duplicate_indexes/collectinfo-2016-12-19T082442-ns_1%4010.111.170.102.zip
      

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              amit.kulkarni Amit Kulkarni
              prasanna.gholap Prasanna Gholap [X] (Inactive)
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                Created:
                Updated:

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