Liang Xie created HDFS-4530:
-------------------------------
Summary: return buffer into direct bufferPool in BlockReaderLocal
as possible
Key: HDFS-4530
URL: https://issues.apache.org/jira/browse/HDFS-4530
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Affects Versions: 3.0.0
Reporter: Liang Xie
Assignee: Liang Xie
{code}
public synchronized void close() throws IOException {
dataIn.close();
if (checksumIn != null) {
checksumIn.close();
}
if (slowReadBuff != null) {
bufferPool.returnBuffer(slowReadBuff);
slowReadBuff = null;
}
if (checksumBuff != null) {
bufferPool.returnBuffer(checksumBuff);
checksumBuff = null;
}
startOffset = -1;
checksum = null;
}
{code}
If there's an IOException occurred in dataIn.close(), then the
slowReadBuff&checksumBuff could not be returned anymore. let's make a trivial
change to reduce this risk.
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