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  1. Jackrabbit Oak
  2. OAK-5925

CLONE - Limit the number of times a LuceneResultRow based iterator get reset

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 1.5.15, 1.6.0
    • Component/s: lucene
    • Labels:
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      Description

      With changes done in OAK-2569 it can happen that the cursor returned by LucenePropertyIndex gets reset multiple times as the index gets updated for a long running query

      Cloned issue to ensure that fix is done for LucenePropertyIndex also

      11697: 26.02.2016 16:12:16.296 *DEBUG* [qtp567069427-14229] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex ... took 3690 ms
      47507: 26.02.2016 16:13:26.744 *DEBUG* [qtp567069427-14229] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex loading the next 12800 entries for query :fulltext:foo
      47513: 26.02.2016 16:13:30.486 *DEBUG* [qtp567069427-14229] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex ... took 3742 ms
      55832: 26.02.2016 16:15:43.693 *DEBUG* [qtp567069427-14229] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex loading the next 25600 entries for query :fulltext:foo
      55835: 26.02.2016 16:15:51.261 *DEBUG* [qtp567069427-14229] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex ... took 7568 ms
      59383: 26.02.2016 16:21:12.355 *DEBUG* [qtp567069427-14229] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex Change in index version detected 4186634 => 4186631. Query would be performed without offset
      59384: 26.02.2016 16:21:12.355 *DEBUG* [qtp567069427-14229] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex loading the first 51200 entries for query :fulltext:foo
      

      If the index continuously gets updated then such a query would never finish and would consume system resources. For such case we should enforce some limit

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              • Assignee:
                chetanm Chetan Mehrotra
                Reporter:
                chetanm Chetan Mehrotra
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                Dates

                • Created:
                  Updated: