Tim Armstrong fae36fc77d
IMPALA-5497: spilling hash joins that output build rows hit OOM ...
The bug is that the join tried to bring the next spilled partition into
memory while still holding onto memory from the current partition.
The fix is to return earlier if the output batch is at capacity so
that resources are flushed.
Also reduce some of the redundancy in the loop that drives the spilling
logic and catch some dropped statuses..
Testing:
The failure was originally reproduced by my IMPALA-4703 patch. I was
able to cause a query failure with the current code by reducing the
memory limit for an existing query. Before it failed with up to 12MB of
memory. Now it succeeds with 8MB or less.
Ran exhaustive build.
Change-Id: I075388d348499c5692d044ac1bc38dd8dd0b10c7
Reviewed-on: http://gerrit.cloudera.org:8080/7180
Reviewed-by: Dan Hecht <dhecht@cloudera.com >
Tested-by: Impala Public Jenkins
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fae36fc77d