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HADOOP-8703. distcpV2: turn CRC checking off for 0 byte size (Dave Thompson via bobby)

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1373581 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Joseph Evans 2012-08-15 19:16:13 +00:00
parent 4e09b481e7
commit 6167123bcb
2 changed files with 6 additions and 1 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -902,6 +902,9 @@ Release 0.23.3 - UNRELEASED
HADOOP-8633. Interrupted FsShell copies may leave tmp files (Daryn Sharp
via tgraves)
HADOOP-8703. distcpV2: turn CRC checking off for 0 byte size (Dave
Thompson via bobby)
Release 0.23.2 - UNRELEASED
INCOMPATIBLE CHANGES

4
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/RetriableFileCopyCommand.java
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@ -91,7 +91,9 @@ private long doCopy(FileStatus sourceFileStatus, Path target,
context, fileAttributes);
compareFileLengths(sourceFileStatus, tmpTargetPath, configuration, bytesRead);
compareCheckSums(sourceFS, sourceFileStatus.getPath(), targetFS, tmpTargetPath);
//At this point, src&dest lengths are same. if length==0, we skip checksum
if (bytesRead != 0)
compareCheckSums(sourceFS, sourceFileStatus.getPath(), targetFS, tmpTargetPath);
promoteTmpToTarget(tmpTargetPath, target, targetFS);
return bytesRead;