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https://issues.apache.org/jira/browse/PARQUET-1320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16505934#comment-16505934
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ASF GitHub Bot commented on PARQUET-1320:
-----------------------------------------
caneGuy opened a new pull request #492: PARQUET-1320: Fix potential direct
memory leak for snappy decompressor
URL: https://github.com/apache/parquet-mr/pull/492
When use NonBlockedDecompressorStream for decompress.
If we do not get any full gc for old gen.we may failed by off-heap memory
leak
This patch fix this potential leak.
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> Fast clean unused direct memory when decompress
> -----------------------------------------------
>
> Key: PARQUET-1320
> URL: https://issues.apache.org/jira/browse/PARQUET-1320
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-mr
> Reporter: zhoukang
> Priority: Major
>
> When use *NonBlockedDecompressorStream* which call:
> *SnappyDecompressor.setInput*
> {code:java}
> public synchronized void setInput(byte[] buffer, int off, int len) {
> SnappyUtil
> public synchronized void setInput(byte[] buffer, int off, int len) {
> SnappyUtil.validateBuffer(buffer, off, len);
> if (inputBuffer.capacity() - inputBuffer.position() < len) {
> ByteBuffer newBuffer = ByteBuffer.allocateDirect(inputBuffer.position() +
> len);
> inputBuffer.rewind();
> newBuffer.put(inputBuffer);
> inputBuffer = newBuffer;
> } else {
> inputBuffer.limit(inputBuffer.position() + len);
> }
> inputBuffer.put(buffer, off, len);
> }
> .validateBuffer(buffer, off, len);
> if (inputBuffer.capacity() - inputBuffer.position() < len) {
> ByteBuffer newBuffer = ByteBuffer.allocateDirect(inputBuffer.position() +
> len);
> inputBuffer.rewind();
> newBuffer.put(inputBuffer);
> inputBuffer = newBuffer;
> } else {
> inputBuffer.limit(inputBuffer.position() + len);
> }
> inputBuffer.put(buffer, off, len);
> }
> {code}
> If we do not get any full gc for old gen.we may failed by off-heap memory leak
>
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