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https://issues.apache.org/jira/browse/HDFS-11851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16016711#comment-16016711
]
Hadoop QA commented on HDFS-11851:
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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
17s{color} | {color:blue} Docker mode activated. {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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 12m
14s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
22s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
11s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
11s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
9s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 0m
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
10s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
10s{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} unit {color} | {color:green} 0m
47s{color} | {color:green} hadoop-hdfs-native-client in the patch passed.
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
16s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 15m 55s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:14b5c93 |
| JIRA Issue | HDFS-11851 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12868844/HDFS-11851.001.patch |
| Optional Tests | asflicense compile cc mvnsite javac unit |
| uname | Linux bbbe1322fe9d 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12
13:48:03 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / b4adc83 |
| Default Java | 1.8.0_131 |
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/19500/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-native-client U:
hadoop-hdfs-project/hadoop-hdfs-native-client |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/19500/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> getGlobalJNIEnv() may deadlock if exception is thrown
> -----------------------------------------------------
>
> Key: HDFS-11851
> URL: https://issues.apache.org/jira/browse/HDFS-11851
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: libhdfs
> Affects Versions: 3.0.0-alpha3
> Reporter: Henry Robinson
> Assignee: Sailesh Mukil
> Priority: Blocker
> Attachments: HDFS-11851.000.patch, HDFS-11851.001.patch
>
>
> HDFS-11529 introduced a deadlock into {{getGlobalJNIEnv()}} if an exception
> is thrown. {{getGlobalJNIEnv()}} holds {{jvmMutex}}, but
> {{printExceptionAndFree()}} will eventually try to acquire that lock in
> {{setTLSExceptionStrings()}}.
> The exception might get caught from {{loadFileSystems}}:
> {code}
> jthr = invokeMethod(env, NULL, STATIC, NULL,
> "org/apache/hadoop/fs/FileSystem",
> "loadFileSystems", "()V");
> if (jthr) {
> printExceptionAndFree(env, jthr, PRINT_EXC_ALL,
> "loadFileSystems");
> }
> }
> {code}
> and here's the relevant parts of the stack trace from where I call this API
> in Impala, which uses {{libhdfs}}:
> {code}
> #0 __lll_lock_wait () at
> ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
> #1 0x00007ffff4a8d657 in _L_lock_909 () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #2 0x00007ffff4a8d480 in __GI___pthread_mutex_lock (mutex=0x47ce960
> <jvmMutex>) at ../nptl/pthread_mutex_lock.c:79
> #3 0x0000000002f06056 in mutexLock (m=<optimized out>) at
> /data/2/jenkins/workspace/impala-hadoop-dependency/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/os/posix/mutexes.c:28
> #4 0x0000000002efe817 in setTLSExceptionStrings (rootCause=0x0,
> stackTrace=0x0) at
> /data/2/jenkins/workspace/impala-hadoop-dependency/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/jni_helper.c:581
> #5 0x0000000002f065d7 in printExceptionAndFreeV (env=0x513c1e8,
> exc=0x508a8c0, noPrintFlags=<optimized out>, fmt=0x34349cf "loadFileSystems",
> ap=0x7fffffffb660)
> at
> /data/2/jenkins/workspace/impala-hadoop-dependency/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/exception.c:183
> #6 0x0000000002f0683d in printExceptionAndFree (env=<optimized out>,
> exc=<optimized out>, noPrintFlags=<optimized out>, fmt=<optimized out>)
> at
> /data/2/jenkins/workspace/impala-hadoop-dependency/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/exception.c:213
> #7 0x0000000002eff60f in getGlobalJNIEnv () at
> /data/2/jenkins/workspace/impala-hadoop-dependency/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/jni_helper.c:463
> {code}
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