Chia-Ping Tsai created HBASE-17872:
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Summary: Make ByteBufferUtils thread-safe
Key: HBASE-17872
URL: https://issues.apache.org/jira/browse/HBASE-17872
Project: HBase
Issue Type: Bug
Reporter: Chia-Ping Tsai
Assignee: Chia-Ping Tsai
Priority: Critical
A case is shown below.
We will get the wrong position of buffer in multithreaded environment, so the
method makes the invalid cell in MSLAB.
{noformat}
public static int copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out, int
sourceOffset,
int destinationOffset, int length) {
if (in.hasArray() && out.hasArray()) {
// ...
} else if (UNSAFE_AVAIL) {
// ...
} else {
int outOldPos = out.position();
out.position(destinationOffset);
ByteBuffer inDup = in.duplicate();
inDup.position(sourceOffset).limit(sourceOffset + length);
out.put(inDup);
out.position(outOldPos);
}
return destinationOffset + length;
}
{noformat}
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