Daniel Templeton created HDFS-14381:
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Summary: Add option to hdfs dfs -cat to ignore corrupt blocks
Key: HDFS-14381
URL: https://issues.apache.org/jira/browse/HDFS-14381
Project: Hadoop HDFS
Issue Type: Improvement
Components: tools
Affects Versions: 3.2.0
Reporter: Daniel Templeton
If I have a file in HDFS that contains 100 blocks, and I happen to lose the
first block (for whatever obscure/unlikely/dumb reason), I can no longer access
the 99% of the file that's still there and accessible. In the case of some
data formats (e.g. text), the remaining data may still be useful. It would be
nice to have a way to extract the remaining data without having to manually
reassemble the file contents from the block files. Something like {{hdfs dfs
-cat -ignoreCorrupt <file>}}. It could insert some marker to show where the
missing blocks are.
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