svn merge -c 1373581 FIXES: HADOOP-8703. distcpV2: turn CRC checking off for 0 byte size (Dave Thompson via bobby)
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1373585 13f79535-47bb-0310-9956-ffa450edef68
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@ -721,6 +721,9 @@ Release 0.23.3 - UNRELEASED
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HADOOP-8633. Interrupted FsShell copies may leave tmp files (Daryn Sharp
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via tgraves)
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HADOOP-8703. distcpV2: turn CRC checking off for 0 byte size (Dave
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Thompson via bobby)
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Release 0.23.2 - UNRELEASED
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NEW FEATURES
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@ -91,7 +91,9 @@ public class RetriableFileCopyCommand extends RetriableCommand {
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context, fileAttributes);
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compareFileLengths(sourceFileStatus, tmpTargetPath, configuration, bytesRead);
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compareCheckSums(sourceFS, sourceFileStatus.getPath(), targetFS, tmpTargetPath);
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//At this point, src&dest lengths are same. if length==0, we skip checksum
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if (bytesRead != 0)
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compareCheckSums(sourceFS, sourceFileStatus.getPath(), targetFS, tmpTargetPath);
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promoteTmpToTarget(tmpTargetPath, target, targetFS);
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return bytesRead;
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