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HADOOP-14405. Fix performance regression due to incorrect use of DataChecksum. Contributed by LiXin Ge.

This commit is contained in:
Masatake Iwasaki 2017-05-10 14:14:20 +09:00
parent ab2bb93a2a
commit 06ffeb8d4d
1 changed files with 11 additions and 3 deletions
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10
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/DataChecksum.java
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@ -300,8 +300,16 @@ public class DataChecksum implements Checksum {
if (data.hasArray() && checksums.hasArray()) {
final int dataOffset = data.arrayOffset() + data.position();
final int crcsOffset = checksums.arrayOffset() + checksums.position();
if (NativeCrc32.isAvailable()) {
NativeCrc32.verifyChunkedSumsByteArray(bytesPerChecksum, type.id,
checksums.array(), crcsOffset, data.array(), dataOffset,
data.remaining(), fileName, basePos);
} else {
verifyChunked(type, summer, data.array(), dataOffset, data.remaining(),
bytesPerChecksum, checksums.array(), crcsOffset, fileName, basePos);
bytesPerChecksum, checksums.array(), crcsOffset, fileName,
basePos);
}
return;
}
if (NativeCrc32.isAvailable() && data.isDirect()) {