yigress opened a new pull request, #4048:
URL: https://github.com/apache/hive/pull/4048
### What changes were proposed in this pull request?
change a new configuration TEZ_MAPREDUCE_OUTPUT_COMMITTER default value to
be empty, so that it is backward compatible.
### Why are the changes needed?
the new configuration
TEZ_MAPREDUCE_OUTPUT_COMMITTER("hive.tez.mapreduce.output.committer.class")
default value is not empty, this by default enables customized output committer
to run in tez mode. This is to change default value so that it is backward
compatible.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
tested locally with customized outputcommitter
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