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https://issues.apache.org/jira/browse/ASTERIXDB-2577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shiva Jahangiri updated ASTERIXDB-2577:
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Summary: Not keeping one frame for each spilled partition during probe
phase (was: Flushing small records during the probe in optimized hhj as large
objects)
> Not keeping one frame for each spilled partition during probe phase
> -------------------------------------------------------------------
>
> Key: ASTERIXDB-2577
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2577
> Project: Apache AsterixDB
> Issue Type: Bug
> Components: *DB - AsterixDB
> Affects Versions: 0.9.4.1
> Reporter: Shiva Jahangiri
> Priority: Major
>
> In probe() method in optimized hybrid hash join, if insertion fails on the
> current spilled partition, we try to find the biggest spilled partition and
> flush it as a victim. If we could not find any spilled partition with size >
> 0, then we ASSUME that the record is large and flush it as a big object. By
> running customerOrderCIDHybridHashJoin_Case3() test in
> TPCHCustomerOrderHashJoinTest, it can be seen that the record size is 206
> bytes (so it is smaller than a frame), but neither the spilled partitions nor
> the buffer manager has any frame (This is the problem, there should be 1
> frame for each spilled partition). In this case, we flush the record as a
> large object. This means that every single record that is supposed to get
> inserted to a spilled partition during the probe, will get flushed
> separately.
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