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https://issues.apache.org/jira/browse/HBASE-20895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16550092#comment-16550092
]
Hadoop QA commented on HBASE-20895:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
15s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m
0s{color} | {color:blue} Findbugs executables are not available. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m
0s{color} | {color:green} Patch does not have any anti-patterns. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m
0s{color} | {color:red} The patch doesn't appear to include any new or modified
tests. Please justify why no new tests are needed for this patch. Also please
list what manual steps were performed to verify this patch. {color} |
|| || || || {color:brown} branch-1 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
41s{color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
35s{color} | {color:green} branch-1 passed with JDK v1.8.0_172 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
38s{color} | {color:green} branch-1 passed with JDK v1.7.0_181 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
21s{color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 2m
35s{color} | {color:green} branch has no errors when building our shaded
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
27s{color} | {color:green} branch-1 passed with JDK v1.8.0_172 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
37s{color} | {color:green} branch-1 passed with JDK v1.7.0_181 {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
33s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
34s{color} | {color:green} the patch passed with JDK v1.8.0_172 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
34s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
38s{color} | {color:green} the patch passed with JDK v1.7.0_181 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
19s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 2m
36s{color} | {color:green} patch has no errors when building our shaded
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
1m 35s{color} | {color:green} Patch does not cause any errors with Hadoop
2.7.4. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
26s{color} | {color:green} the patch passed with JDK v1.8.0_172 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
37s{color} | {color:green} the patch passed with JDK v1.7.0_181 {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 97m 31s{color}
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
21s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}115m 49s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:61288f8 |
| JIRA Issue | HBASE-20895 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12932156/HBASE-20895-branch-1.patch
|
| Optional Tests | asflicense javac javadoc unit findbugs shadedjars
hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 7010020a45a8 3.13.0-153-generic #203-Ubuntu SMP Thu Jun 14
08:52:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
| git revision | branch-1 / e5618a6 |
| maven | version: Apache Maven 3.0.5 |
| Default Java | 1.7.0_181 |
| Multi-JDK versions | /usr/lib/jvm/java-8-openjdk-amd64:1.8.0_172
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_181 |
| unit |
https://builds.apache.org/job/PreCommit-HBASE-Build/13695/artifact/patchprocess/patch-unit-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/13695/testReport/ |
| Max. process+thread count | 3591 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/13695/console |
| Powered by | Apache Yetus 0.7.0 http://yetus.apache.org |
This message was automatically generated.
> NPE in RpcServer#readAndProcess
> -------------------------------
>
> Key: HBASE-20895
> URL: https://issues.apache.org/jira/browse/HBASE-20895
> Project: HBase
> Issue Type: Bug
> Components: rpc
> Affects Versions: 1.3.2
> Reporter: Andrew Purtell
> Assignee: Monani Mihir
> Priority: Major
> Fix For: 1.5.0, 1.3.3, 1.4.6
>
> Attachments: HBASE-20895-branch-1.patch
>
>
> {noformat}
> 2018-07-10 16:25:55,005 DEBUG [.sfdc.net,port=60020] ipc.RpcServer -
> RpcServer.listener,port=60020: Caught exception while reading:
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.ipc.RpcServer$Connection.readAndProcess(RpcServer.java:1761)
> at
> org.apache.hadoop.hbase.ipc.RpcServer$Listener.doRead(RpcServer.java:949)
> at
> org.apache.hadoop.hbase.ipc.RpcServer$Listener$Reader.doRunLoop(RpcServer.java:730)
> at
> org.apache.hadoop.hbase.ipc.RpcServer$Listener$Reader.run(RpcServer.java:706)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> This looks like it could be a use after close problem if there is concurrent
> access to a Connection.
> In process() we might store a null back to the 'data' field.
> Meanwhile in readAndProcess() we have a case where we might be blocked on a
> channel read and then after coming back from the read we go to use 'data'
> after a null has been written back, leading to a NPE.
> {quote}count = channelRead(channel, data);
> 1761 ---> if (count >= 0 && *data.remaining()* == 0)
> \{ process(); }{quote}
> Whether a NPE happens or not is going to depend on the timing of the store
> back to 'data' in another thread and use of 'data' in this thread and whether
> or not the JVM has optimized away a reload of 'data' (it's not declared
> volatile)
> We should do a null check here just to be defensive. We should also look at
> whether concurrent access to the Connection is happening and intended.The
> above is just a theory. We should also look at other execution sequences that
> could lead to 'data' being null in this location. At a glance I didn't find
> one but the store to 'data' happens behind conditionals so it is possible.
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