srowen commented on issue #23986: [SPARK-27070] Fix performance bug in
DefaultPartitionCoalescer
URL: https://github.com/apache/spark/pull/23986#issuecomment-473578962
@fitermay I guess it has to be more explicitly constructed as an `Ordering`?
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srowen commented on issue #23986: [SPARK-27070] Fix performance bug in
DefaultPartitionCoalescer
URL: https://github.com/apache/spark/pull/23986#issuecomment-473122926
Merged to master
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srowen commented on issue #23986: [SPARK-27070] Fix performance bug in
DefaultPartitionCoalescer
URL: https://github.com/apache/spark/pull/23986#issuecomment-471026686
Hm! That's surprising. Looking at min vs minBy, it even seems like min has
more indirection (calls foldLeft). The implicit
srowen commented on issue #23986: [SPARK-27070] Fix performance bug in
DefaultPartitionCoalescer
URL: https://github.com/apache/spark/pull/23986#issuecomment-470613691
There's a little detail in the JIRA that's pretty suggestive that this is
the bottleneck; if there's a stack trace or more
