jojochuang commented on a change in pull request #2892:
URL: https://github.com/apache/hadoop/pull/2892#discussion_r611335147
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File path:
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/CopyCommitter.java
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@@ -635,7 +635,10 @@ private void concatFileChunks(Configuration conf, Path
sourceFile,
++i;
}
}
+ long firstChunkLastModifiedTs = dstfs.getFileStatus(firstChunkFile)
+ .getModificationTime();
dstfs.concat(firstChunkFile, restChunkFiles);
+ dstfs.setTimes(firstChunkFile, firstChunkLastModifiedTs, -1);
Review comment:
I think you should update mtime after rename(). The HDFS rename updates
mtime too. Not sure about other file system implementations but it's safe to
assume that being the case.
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