[
https://issues.apache.org/jira/browse/HBASE-14266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14972950#comment-14972950
]
Hudson commented on HBASE-14266:
--------------------------------
FAILURE: Integrated in HBase-1.2 #303 (See
[https://builds.apache.org/job/HBase-1.2/303/])
HBASE-14266 RegionServers have a lock contention of (stack: rev
63394df85dd3681a0cdbf55595684bae5bec91e9)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMajorCompaction.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestCoprocessorScanPolicy.java
*
hbase-examples/src/main/java/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/HBaseConfiguration.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/NoOpScanPolicyObserver.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestStoreScanner.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestDefaultCompactSelection.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestReversibleScanners.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompaction.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestDefaultMemStore.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestStripeCompactor.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ScanInfo.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestQueryMatcher.java
> RegionServers have a lock contention of Configuration.getProps
> --------------------------------------------------------------
>
> Key: HBASE-14266
> URL: https://issues.apache.org/jira/browse/HBASE-14266
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Environment: hbase-0.98.6-cdh5.3.1
> Reporter: Toshihiro Suzuki
> Assignee: Andrew Purtell
> Priority: Critical
> Fix For: 2.0.0, 1.2.0, 1.3.0
>
> Attachments: 14266v2.patch, 14266v3.patch, 14266v3.txt,
> HBASE-14266.patch, Screen Shot 2015-10-23 at 5.11.46 PM.png, Screen Shot
> 2015-10-23 at 5.24.03 PM.png, thread_dump.txt
>
>
> Here's an extract from thread dump of the RegionServer of my cluster:
> {code}
> ...
> Thread 267 (RW.default.readRpcServer.handler=184,queue=15,port=60020):
> State: BLOCKED
> Blocked count: 204028
> Waited count: 9702639
> Blocked on org.apache.hadoop.conf.Configuration@5a5e3da
> Blocked by 250 (RW.default.readRpcServer.handler=167,queue=18,port=60020)
> Stack:
> org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2250)
> org.apache.hadoop.conf.Configuration.get(Configuration.java:861)
> org.apache.hadoop.conf.Configuration.getTrimmed(Configuration.java:880)
> org.apache.hadoop.conf.Configuration.getBoolean(Configuration.java:1281)
>
> org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:138)
>
> org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:157)
>
> org.apache.hadoop.hbase.regionserver.HStore.createScanner(HStore.java:1804)
> org.apache.hadoop.hbase.regionserver.HStore.getScanner(HStore.java:1794)
>
> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:3852)
>
> org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:1952)
> org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1938)
> org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1915)
> org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:4872)
> org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:4847)
>
> org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:2918)
>
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29921)
> org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2031)
> org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:108)
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:116)
> org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:96)
> ...
> {code}
> There are such many threads in the thread dump.
> I think that RegionServers have a lock contention which causes performance
> issue.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
