[SPARK-3979] [yarn] Use fs's default replication. #2831
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This avoids issues when HDFS is configured in a way that would not allow the hardcoded default replication of "3". Note: getDefaultReplication(Path) was added in 0.23.3, and the oldest one available on Maven Central is 0.23.7, so I chose to not add code to access that method via reflection.
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Tested with dfs.replication / dfs.replication.max set to 1, jobs work fine. |
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QA tests have started for PR 2831 at commit
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QA tests have finished for PR 2831 at commit
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Test PASSed. |
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This is another reason why we should deprecate alpha. LGTM conceptually. |
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Changes look good. +1 |
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This avoids issues when HDFS is configured in a way that would not
allow the hardcoded default replication of "3".
Note: getDefaultReplication(Path) was added in 0.23.3, and the oldest
one available on Maven Central is 0.23.7, so I chose to not add code
to access that method via reflection.