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https://issues.apache.org/jira/browse/HBASE-13301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhangduo updated HBASE-13301:
-----------------------------
Attachment: HBASE-13301-branch-1.0_v1.patch
> Possible memory leak in BucketCache
> -----------------------------------
>
> Key: HBASE-13301
> URL: https://issues.apache.org/jira/browse/HBASE-13301
> Project: HBase
> Issue Type: Bug
> Components: BlockCache
> Reporter: zhangduo
> Assignee: zhangduo
> Fix For: 2.0.0, 1.1.0, 0.98.13, 1.0.2
>
> Attachments: HBASE-13301-0.98.patch, HBASE-13301-branch-1.0.patch,
> HBASE-13301-branch-1.0.patch, HBASE-13301-branch-1.0_v1.patch,
> HBASE-13301-branch-1.patch, HBASE-13301-branch-1_v1.patch,
> HBASE-13301-testcase.patch, HBASE-13301-testcase_v1.patch, HBASE-13301.patch,
> HBASE-13301_v1.patch, HBASE-13301_v2.patch, HBASE-13301_v3.patch
>
>
> {code:title=BucketCache.java}
> public boolean evictBlock(BlockCacheKey cacheKey) {
> ...
> if (bucketEntry.equals(backingMap.remove(cacheKey))) {
> bucketAllocator.freeBlock(bucketEntry.offset());
> realCacheSize.addAndGet(-1 * bucketEntry.getLength());
> blocksByHFile.remove(cacheKey.getHfileName(), cacheKey);
> if (removedBlock == null) {
> this.blockNumber.decrementAndGet();
> }
> } else {
> return false;
> }
> ...
> {code}
> I think the problem is here. We remove a BucketEntry that should not be
> removed by us, but we do not put it back and also do not do any clean up.
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