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https://issues.apache.org/jira/browse/HDFS-15963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17318747#comment-17318747
]
Hadoop QA commented on HDFS-15963:
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|| Vote || Subsystem || Runtime || Logfile || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 14m
23s{color} | {color:blue}{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} || ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green} 0m
0s{color} | {color:green}{color} | {color:green} No case conflicting files
found. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m
0s{color} | {color:green}{color} | {color:green} The patch does not contain any
@author tags. {color} |
| {color:green}+1{color} | {color:green} {color} | {color:green} 0m 0s{color}
| {color:green}test4tests{color} | {color:green} The patch appears to include 3
new or modified test files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} || ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 20m
15s{color} | {color:green}{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
21s{color} | {color:green}{color} | {color:green} trunk passed with JDK
Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
17s{color} | {color:green}{color} | {color:green} trunk passed with JDK Private
Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
7s{color} | {color:green}{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
21s{color} | {color:green}{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
15m 36s{color} | {color:green}{color} | {color:green} branch has no errors when
building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
52s{color} | {color:green}{color} | {color:green} trunk passed with JDK
Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
24s{color} | {color:green}{color} | {color:green} trunk passed with JDK Private
Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08 {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue} 20m
54s{color} | {color:blue}{color} | {color:blue} Both FindBugs and SpotBugs are
enabled, using SpotBugs. {color} |
| {color:green}+1{color} | {color:green} spotbugs {color} | {color:green} 3m
2s{color} | {color:green}{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} || ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
12s{color} | {color:green}{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
11s{color} | {color:green}{color} | {color:green} the patch passed with JDK
Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
11s{color} | {color:green}{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
6s{color} | {color:green}{color} | {color:green} the patch passed with JDK
Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
6s{color} | {color:green}{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}
0m 58s{color} |
{color:orange}https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/568/artifact/out/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt{color}
| {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch generated 2 new +
242 unchanged - 0 fixed = 244 total (was 242) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
11s{color} | {color:green}{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s{color} | {color:green}{color} | {color:green} The patch has no whitespace
issues. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
13m 3s{color} | {color:green}{color} | {color:green} patch has no errors when
building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
51s{color} | {color:green}{color} | {color:green} the patch passed with JDK
Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
30s{color} | {color:green}{color} | {color:green} the patch passed with JDK
Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08 {color} |
| {color:green}+1{color} | {color:green} spotbugs {color} | {color:green} 3m
16s{color} | {color:green}{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} || ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}237m 32s{color}
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{color:red}https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/568/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt{color}
| {color:red} hadoop-hdfs in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
46s{color} | {color:green}{color} | {color:green} The patch does not generate
ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}323m 53s{color} |
{color:black}{color} | {color:black}{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.datanode.TestDirectoryScanner |
| | hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks |
| | hadoop.hdfs.qjournal.server.TestJournalNodeRespectsBindHostKeys |
| | hadoop.fs.viewfs.TestViewFsLinkFallback |
| | hadoop.hdfs.server.namenode.snapshot.TestNestedSnapshots |
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|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/568/artifact/out/Dockerfile
|
| JIRA Issue | HDFS-15963 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/13023670/HDFS-15963.003.patch |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle spotbugs |
| uname | Linux a6ad97b14093 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9
23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/hadoop.sh |
| git revision | trunk / 6a9a5ae5fdc |
| Default Java | Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08 |
| Test Results |
https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/568/testReport/ |
| Max. process+thread count | 2909 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://ci-hadoop.apache.org/job/PreCommit-HDFS-Build/568/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.13.0-SNAPSHOT https://yetus.apache.org |
This message was automatically generated.
> Unreleased volume references cause an infinite loop
> ---------------------------------------------------
>
> Key: HDFS-15963
> URL: https://issues.apache.org/jira/browse/HDFS-15963
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Reporter: Shuyan Zhang
> Assignee: Shuyan Zhang
> Priority: Major
> Labels: pull-request-available
> Attachments: HDFS-15963.001.patch, HDFS-15963.002.patch,
> HDFS-15963.003.patch
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> When BlockSender throws an exception because the meta-data cannot be found,
> the volume reference obtained by the thread is not released, which causes the
> thread trying to remove the volume to wait and fall into an infinite loop.
> {code:java}
> boolean checkVolumesRemoved() {
> Iterator<FsVolumeImpl> it = volumesBeingRemoved.iterator();
> while (it.hasNext()) {
> FsVolumeImpl volume = it.next();
> if (!volume.checkClosed()) {
> return false;
> }
> it.remove();
> }
> return true;
> }
> boolean checkClosed() {
> // always be true.
> if (this.reference.getReferenceCount() > 0) {
> FsDatasetImpl.LOG.debug("The reference count for {} is {}, wait to be 0.",
> this, reference.getReferenceCount());
> return false;
> }
> return true;
> }
> {code}
> At the same time, because the thread has been holding checkDirsLock when
> removing the volume, other threads trying to acquire the same lock will be
> permanently blocked.
> Similar problems also occur in RamDiskAsyncLazyPersistService and
> FsDatasetAsyncDiskService.
> This patch releases the three previously unreleased volume references.
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