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From "Vladimir Ozerov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-6904) SQL: Partition reservations are released too early in lazy mode
Date Tue, 14 Nov 2017 13:57:01 GMT
Vladimir Ozerov created IGNITE-6904:
---------------------------------------

             Summary: SQL: Partition reservations are released too early in lazy mode
                 Key: IGNITE-6904
                 URL: https://issues.apache.org/jira/browse/IGNITE-6904
             Project: Ignite
          Issue Type: Task
      Security Level: Public (Viewable by anyone)
          Components: sql
    Affects Versions: 2.3
            Reporter: Vladimir Ozerov
             Fix For: 2.4


In lazy mode we advance query execution as new page requests arrive. However, method {{GridMapQueryExecutor#onQueryRequest0}}
releases partition reservations when only the very first page is processed:
{code}
finally {
    GridH2QueryContext.clearThreadLocal();

    if (distributedJoinMode == OFF)
        qctx.clearContext(false);
}
{code}

It means that incorrect results may be returned on unstable topology. We need to release partitions
only after the whole query is executed.



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