Akira Ajisaka created HADOOP-17299:
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Summary: DistCp should fail fast if the configuration is not valid
Key: HADOOP-17299
URL: https://issues.apache.org/jira/browse/HADOOP-17299
Project: Hadoop Common
Issue Type: Bug
Components: tools/distcp
Reporter: Akira Ajisaka
If the number of Map task is more than 200 and using dynamic option, DistCp
always fails by DynamicInputFormat#validateNumChunksUsing. This failure is
after building the src/dst paths, which takes more than 10 minutes if the
directory is large (i.e. DistCp fails by configuration error after more than 10
minutes).
I think DistCp should validate the configuration before building the src/dst
paths and fail if the configuration is not valid.
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