[SPARK-17515] CollectLimit.execute() should perform per-partition limits #15070
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Test build #65296 has finished for PR 15070 at commit
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Contributor
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LGTM - merging to master. Thanks! |
asfgit
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Sep 13, 2016
CollectLimit.execute() incorrectly omits per-partition limits, leading to performance regressions in case this case is hit (which should not happen in normal operation, but can occur in some cases (see #15068 for one example). Regression test in SQLQuerySuite that asserts the number of records scanned from the input RDD. Author: Josh Rosen <joshrosen@databricks.com> Closes #15070 from JoshRosen/SPARK-17515. (cherry picked from commit 3f6a2bb) Signed-off-by: Herman van Hovell <hvanhovell@databricks.com>
wgtmac
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Sep 19, 2016
## What changes were proposed in this pull request? CollectLimit.execute() incorrectly omits per-partition limits, leading to performance regressions in case this case is hit (which should not happen in normal operation, but can occur in some cases (see apache#15068 for one example). ## How was this patch tested? Regression test in SQLQuerySuite that asserts the number of records scanned from the input RDD. Author: Josh Rosen <joshrosen@databricks.com> Closes apache#15070 from JoshRosen/SPARK-17515.
Contributor
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Just a note. It is also in branch 2.0. |
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What changes were proposed in this pull request?
CollectLimit.execute() incorrectly omits per-partition limits, leading to performance regressions in case this case is hit (which should not happen in normal operation, but can occur in some cases (see #15068 for one example).
How was this patch tested?
Regression test in SQLQuerySuite that asserts the number of records scanned from the input RDD.