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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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14
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/DataChecksum.java
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@ -296,12 +296,20 @@ public class DataChecksum implements Checksum {
public void verifyChunkedSums(ByteBuffer data, ByteBuffer checksums,
String fileName, long basePos) throws ChecksumException {
if (type.size == 0) return;
if (data.hasArray() && checksums.hasArray()) {
final int dataOffset = data.arrayOffset() + data.position();
final int crcsOffset = checksums.arrayOffset() + checksums.position();
verifyChunked(type, summer, data.array(), dataOffset, data.remaining(),
bytesPerChecksum, checksums.array(), crcsOffset, fileName, basePos);
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);
}
return;
}
if (NativeCrc32.isAvailable() && data.isDirect()) {