Uploaded image for project: 'Solr'
  1. Solr
  2. SOLR-12291

Async prematurely reports completed status that causes severe shard loss

    XMLWordPrintableJSON

Details

    Description

      The OverseerCollectionMessageHandler sliceCmd assumes only one replica exists on one node

      When multiple replicas of a slice are on the same node we only track one replica's async request. This happens because the async requestMap's key is "node_name"

      I discovered this when alabax shared some logs of a restore issue, where the second replica got added before the first replica had completed it's restorecore action.

      While looking at the logs I noticed that the overseer never called REQUESTSTATUS for the restorecore action , almost as if it had missed tracking that particular async request.

      Attachments

        1. SOLR-12291.patch
          75 kB
          Mikhail Khludnev
        2. SOLR-12291.patch
          73 kB
          Mikhail Khludnev
        3. SOLR-12291.patch
          56 kB
          Mikhail Khludnev
        4. SOLR-12291.patch
          3 kB
          Mikhail Khludnev
        5. SOLR-12291.patch
          6 kB
          Mikhail Khludnev
        6. SOLR-12291.patch
          65 kB
          Mikhail Khludnev
        7. SOLR-12291.patch
          29 kB
          Mikhail Khludnev
        8. SOLR-122911.patch
          49 kB
          Varun Thacker

        Issue Links

          duplicates

          Improvement - An improvement or enhancement to an existing feature or task. SOLR-12867 Async request status: Not getting all status messages because a response from one node will overwrite previous responses from that node

          • Major - Major loss of function.
          • Resolved
          is related to

          Sub-task - The sub-task of the issue SOLR-5477 Async execution of OverseerCollectionProcessor tasks

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. SOLR-13231 async CREATE collection request doesn't fail or cleanup when the request fails

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              mkhl Mikhail Khludnev
              varun Varun Thacker
              Votes:
              1 Vote for this issue
              Watchers:
              10 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: