[
https://issues.apache.org/jira/browse/HBASE-11813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14109187#comment-14109187
]
Hadoop QA commented on HBASE-11813:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12664156/11813v2.master.txt
against trunk revision .
ATTACHMENT ID: 12664156
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 3 new
or modified tests.
{color:red}-1 Anti-pattern{color}. The patch appears to
have anti-pattern where BYTES_COMPARATOR was omitted:
+ NavigableMap<byte [], List<Cell>> m = new TreeMap<byte [],
List<Cell>>();.
{color:red}-1 javac{color}. The patch appears to cause mvn compile goal to
fail.
Compilation errors resume:
[ERROR] COMPILATION ERROR :
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-common/src/test/java/org/apache/hadoop/hbase/TestCellUtil.java:[79,10]
error: TestCellUtil.TestCell is not abstract and does not override abstract
method getTagsLength() in Cell
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-common/src/test/java/org/apache/hadoop/hbase/TestCellUtil.java:[186,17]
error: getTagsLength() in TestCellUtil.TestCell cannot implement
getTagsLength() in Cell
[ERROR] return type short is not compatible with int
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-common/src/test/java/org/apache/hadoop/hbase/TestCellUtil.java:[191,4]
error: method does not override or implement a method from a supertype
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:2.5.1:testCompile
(default-testCompile) on project hbase-common: Compilation failure: Compilation
failure:
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-common/src/test/java/org/apache/hadoop/hbase/TestCellUtil.java:[79,10]
error: TestCellUtil.TestCell is not abstract and does not override abstract
method getTagsLength() in Cell
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-common/src/test/java/org/apache/hadoop/hbase/TestCellUtil.java:[186,17]
error: getTagsLength() in TestCellUtil.TestCell cannot implement
getTagsLength() in Cell
[ERROR] return type short is not compatible with int
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-common/src/test/java/org/apache/hadoop/hbase/TestCellUtil.java:[185,4]
error: method does not override or implement a method from a supertype
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-common/src/test/java/org/apache/hadoop/hbase/TestCellUtil.java:[191,4]
error: method does not override or implement a method from a supertype
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :hbase-common
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/10565//console
This message is automatically generated.
> CellScanner#advance may infinitely recurse
> ------------------------------------------
>
> Key: HBASE-11813
> URL: https://issues.apache.org/jira/browse/HBASE-11813
> Project: HBase
> Issue Type: Bug
> Reporter: Andrew Purtell
> Assignee: stack
> Priority: Blocker
> Fix For: 0.99.0, 2.0.0, 0.98.6
>
> Attachments: 11813.098.txt, 11813.098.txt, 11813.master.txt,
> 11813.master.txt, 11813v2.master.txt, catch_all_exceptions.txt
>
>
> On user@hbase, [email protected] reported:
> {quote}
> we face a serious issue with our HBase production cluster for two days now.
> Every couple minutes, a random RegionServer gets stuck and does not process
> any requests. In addition this causes the other RegionServers to freeze
> within a minute which brings down the entire cluster. Stopping the affected
> RegionServer unblocks the cluster and everything comes back to normal.
> {quote}
> Subsequent troubleshooting reveals that RPC is getting stuck because we are
> losing RPC handlers. In the .out files we have this:
> {noformat}
> Exception in thread "defaultRpcServer.handler=5,queue=2,port=60020"
> java.lang.StackOverflowError
> at org.apache.hadoop.hbase.CellUtil$1.advance(CellUtil.java:210)
> at org.apache.hadoop.hbase.CellUtil$1.advance(CellUtil.java:210)
> at org.apache.hadoop.hbase.CellUtil$1.advance(CellUtil.java:210)
> at org.apache.hadoop.hbase.CellUtil$1.advance(CellUtil.java:210)
> [...]
> Exception in thread "defaultRpcServer.handler=5,queue=2,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=18,queue=0,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=23,queue=2,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=24,queue=0,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=2,queue=2,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=11,queue=2,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=25,queue=1,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=20,queue=2,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=19,queue=1,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=15,queue=0,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=1,queue=1,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=7,queue=1,port=60020"
> java.lang.StackOverflowError
> Exception in thread "defaultRpcServer.handler=4,queue=1,port=60020"
> java.lang.StackOverflowError​
> {noformat}
> That is the anonymous CellScanner instance we create from
> CellUtil#createCellScanner:
> {code}
> ​ return new CellScanner() {
> private final Iterator<? extends CellScannable> iterator =
> cellScannerables.iterator();
> private CellScanner cellScanner = null;
> @Override
> public Cell current() {
> return this.cellScanner != null? this.cellScanner.current(): null;
> }
> @Override
> public boolean advance() throws IOException {
> if (this.cellScanner == null) {
> if (!this.iterator.hasNext()) return false;
> this.cellScanner = this.iterator.next().cellScanner();
> }
> if (this.cellScanner.advance()) return true;
> this.cellScanner = null;
> ---> return advance();
> }
> };
> {code}
> That final return statement is the immediate problem.
> We should also fix this so the RegionServer aborts if it loses a handler to
> an Error.
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