Constantine Peresypkin created HDFS-9164:
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Summary: hdfs-nfs connector fails on O_TRUNC
Key: HDFS-9164
URL: https://issues.apache.org/jira/browse/HDFS-9164
Project: Hadoop HDFS
Issue Type: Bug
Components: HDFS
Reporter: Constantine Peresypkin
Linux NFS client will issue `open(.. O_TRUNC); write()` when overwriting a file
that's in nfs client cache (probably does it to not evict the inode). Which
will spectacularly fail on hdfs-nfs with I/O error.
Example:
$ cp /some/file /to/hdfs/mount/
$ cp /some/file /to/hdfs/mount/
I/O error
The first write will pass if the file is not in cache, the second one will
always fail.
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