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https://issues.apache.org/jira/browse/HDFS-10183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15202424#comment-15202424
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Hadoop QA commented on HDFS-10183:
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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} 11m 41s
{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} 6m
55s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 42s
{color} | {color:green} trunk passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 42s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
25s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 53s
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
14s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 1s
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 10s
{color} | {color:green} trunk passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 49s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
46s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 41s
{color} | {color:green} the patch passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 41s
{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_95 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 38s
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 22s
{color} | {color:red} hadoop-hdfs-project/hadoop-hdfs: patch generated 2 new +
317 unchanged - 0 fixed = 319 total (was 317) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 49s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
11s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 9s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 3s
{color} | {color:green} the patch passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 47s
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 68m 58s {color}
| {color:red} hadoop-hdfs in the patch failed with JDK v1.8.0_74. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 59m 29s {color}
| {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_95. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
25s {color} | {color:green} Patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 165m 57s {color}
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_74 Failed junit tests |
hadoop.hdfs.server.datanode.fsdataset.impl.TestFsDatasetImpl |
| | hadoop.hdfs.TestCrcCorruption |
| | hadoop.hdfs.server.namenode.TestEditLog |
| | hadoop.hdfs.server.datanode.TestDataNodeLifeline |
| JDK v1.8.0_74 Timed out junit tests |
org.apache.hadoop.hdfs.TestLeaseRecovery2 |
| JDK v1.7.0_95 Failed junit tests | hadoop.hdfs.TestHFlush |
| | hadoop.hdfs.server.namenode.TestEditLog |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:fbe3e86 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12794214/HADOOP-12944.1.patch |
| JIRA Issue | HDFS-10183 |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux 1ec1fdb94a9e 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / fbe3e86 |
| Default Java | 1.7.0_95 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_74
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_95 |
| findbugs | v3.0.0 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/14866/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/14866/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_74.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/14866/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_95.txt
|
| unit test logs |
https://builds.apache.org/job/PreCommit-HDFS-Build/14866/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_74.txt
https://builds.apache.org/job/PreCommit-HDFS-Build/14866/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_95.txt
|
| JDK v1.7.0_95 Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/14866/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/14866/console |
| Powered by | Apache Yetus 0.2.0 http://yetus.apache.org |
This message was automatically generated.
> Prevent race condition during class initialization
> --------------------------------------------------
>
> Key: HDFS-10183
> URL: https://issues.apache.org/jira/browse/HDFS-10183
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.9.0
> Reporter: Pavel Avgustinov
> Assignee: Pavel Avgustinov
> Priority: Minor
> Fix For: 2.9.0
>
> Attachments: HADOOP-12944.1.patch
>
>
> In HADOOP-11969, [~busbey] tracked down a non-deterministic
> {{NullPointerException}} to an oddity in the Java memory model: When multiple
> threads trigger the loading of a class at the same time, one of them wins and
> creates the {{java.lang.Class}} instance; the others block during this
> initialization, but once it is complete they may obtain a reference to the
> {{Class}} which has non-{{final}} fields still containing their default (i.e.
> {{null}}) values. This leads to runtime failures that are hard to debug or
> diagnose.
> HADOOP-11969 observed that {{ThreadLocal}} fields, by their very nature, are
> very likely to be accessed from multiple threads, and thus the problem is
> particularly severe there. Consequently, the patch removed all occurrences of
> the issue in the code base.
> Unfortunately, since then HDFS-7964 has [reverted one of the fixes during a
> refactoring|https://github.com/apache/hadoop/commit/2151716832ad14932dd65b1a4e47e64d8d6cd767#diff-0c2e9f7f9e685f38d1a11373b627cfa6R151],
> and introduced a [new instance of the
> problem|https://github.com/apache/hadoop/commit/2151716832ad14932dd65b1a4e47e64d8d6cd767#diff-6334d0df7d9aefbccd12b21bb7603169R43].
> The attached patch addresses the issue by adding the missing {{final}}
> modifier in these two cases.
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