Shashank Gupta created JCR-3879:
-----------------------------------
Summary: [jackrabbit-aws-ext] Remove contention in
AsyncUploadCache to improve performance
Key: JCR-3879
URL: https://issues.apache.org/jira/browse/JCR-3879
Project: Jackrabbit Content Repository
Issue Type: Improvement
Components: jackrabbit-data
Affects Versions: 2.10
Reporter: Shashank Gupta
Assignee: Shashank Gupta
Fix For: 2.10.1
Attachments: threaddump-1430772987871.tdump
39 threads getting blocked on a lock
{code}
"qtp838397579-20736" - Thread t@20736
java.lang.Thread.State: BLOCKED
at
org.apache.jackrabbit.core.data.AsyncUploadCache.hasEntry(AsyncUploadCache.java:165)
- waiting to lock <4f224235> (a
org.apache.jackrabbit.core.data.AsyncUploadCache) owned by "s3-write-worker-14"
t@624
at
org.apache.jackrabbit.core.data.CachingDataStore.getRecord(CachingDataStore.java:422)
at
org.apache.jackrabbit.oak.plugins.blob.datastore.DataStoreBlobStore.getDataRecord(DataStoreBlobStore.java:474)
at
org.apache.jackrabbit.oak.plugins.blob.datastore.DataStoreBlobStore.getStream(DataStoreBlobStore.java:463)
at
org.apache.jackrabbit.oak.plugins.blob.datastore.DataStoreBlobStore.getInputStream(DataStoreBlobStore.java:297)
at
org.apache.jackrabbit.oak.plugins.blob.BlobStoreBlob.getNewStream(BlobStoreBlob.java:47)
{code}
The lock is taken by this thread
{code}
"s3-write-worker-14" - Thread t@624
java.lang.Thread.State: RUNNABLE
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:221)
at java.io.FileOutputStream.<init>(FileOutputStream.java:171)
at
org.apache.jackrabbit.core.data.AsyncUploadCache.serializeAsyncUploadMap(AsyncUploadCache.java:293)
- locked <4f224235> (a org.apache.jackrabbit.core.data.AsyncUploadCache)
at
org.apache.jackrabbit.core.data.AsyncUploadCache.remove(AsyncUploadCache.java:131)
- locked <4f224235> (a org.apache.jackrabbit.core.data.AsyncUploadCache)
{code}
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