Steve Loughran created HADOOP-15273:
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Summary: distcp error message on checksum mismatch is misleading
when checksum protocol itself is different
Key: HADOOP-15273
URL: https://issues.apache.org/jira/browse/HADOOP-15273
Project: Hadoop Common
Issue Type: Bug
Components: tools/distcp
Affects Versions: 3.1.0
Reporter: Steve Loughran
When using distcp without {{-skipCRC}} . If there's a checksum mismatch between
src and dest store types (e.g hdfs to s3), then the error message will talk
about blocksize, even when its the underlying checksum protocol itself which is
the cause for failure
bq. Source and target differ in block-size. Use -pb to preserve block-sizes
during copy. Alternatively, skip checksum-checks altogether, using -skipCrc.
(NOTE: By skipping checksums, one runs the risk of masking data-corruption
during file-transfer.)
IF the checksum types are fundamentally different, the error message should say
so
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