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https://issues.apache.org/jira/browse/HDFS-11701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16355033#comment-16355033
]
genericqa commented on HDFS-11701:
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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
32s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | {color:green} The patch appears to include 1 new or modified test
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
16s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 15m
42s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
30s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
39s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
29s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
10m 48s{color} | {color:green} branch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m
18s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
11s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
7s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
27s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
35s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
26s{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} shadedclient {color} | {color:green}
9m 21s{color} | {color:green} patch has no errors when building and testing our
client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m
25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
10s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m
24s{color} | {color:green} hadoop-hdfs-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}125m 16s{color}
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m
18s{color} | {color:red} The patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}180m 38s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA |
| | hadoop.hdfs.server.namenode.TestListCorruptFileBlocks |
| | hadoop.hdfs.web.TestWebHdfsTimeouts |
| | hadoop.hdfs.TestReadStripedFileWithMissingBlocks |
| | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | HDFS-11701 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12909552/HDFS-11701.004.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle |
| uname | Linux 9710e7bbb4da 4.4.0-64-generic #85-Ubuntu SMP Mon Feb 20
11:50:30 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 4fadcf1 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/22966/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/22966/testReport/ |
| asflicense |
https://builds.apache.org/job/PreCommit-HDFS-Build/22966/artifact/out/patch-asflicense-problems.txt
|
| Max. process+thread count | 3581 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-client
hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/22966/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> NPE from Unresolved Host causes permanent DFSInputStream failures
> -----------------------------------------------------------------
>
> Key: HDFS-11701
> URL: https://issues.apache.org/jira/browse/HDFS-11701
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.6.0
> Environment: AWS Centos linux running HBase CDH 5.9.0 and HDFS CDH
> 5.9.0
> Reporter: James Moore
> Assignee: Lokesh Jain
> Priority: Major
> Attachments: HDFS-11701.001.patch, HDFS-11701.002.patch,
> HDFS-11701.003.patch, HDFS-11701.004.patch
>
>
> We recently encountered the following NPE due to the DFSInputStream storing
> old cached block locations from hosts which could no longer resolve.
> {quote}
> Caused by: java.lang.NullPointerException
> at org.apache.hadoop.hdfs.DFSClient.isLocalAddress(DFSClient.java:1122)
> at
> org.apache.hadoop.hdfs.shortcircuit.DomainSocketFactory.getPathInfo(DomainSocketFactory.java:148)
> at
> org.apache.hadoop.hdfs.BlockReaderFactory.getBlockReaderLocal(BlockReaderFactory.java:474)
> at
> org.apache.hadoop.hdfs.BlockReaderFactory.build(BlockReaderFactory.java:354)
> at
> org.apache.hadoop.hdfs.DFSInputStream.blockSeekTo(DFSInputStream.java:662)
> at
> org.apache.hadoop.hdfs.DFSInputStream.seekToNewSource(DFSInputStream.java:1613)
> at
> org.apache.hadoop.fs.FSDataInputStream.seekToNewSource(FSDataInputStream.java:127)
> ~HBase related stack frames trimmed~
> {quote}
> After investigating, the DFSInputStream appears to have been open for upwards
> of 3-4 weeks and had cached block locations from decommissioned nodes that no
> longer resolve in DNS and had been shutdown and removed from the cluster 2
> weeks prior. If the DFSInputStream had refreshed its block locations from
> the name node, it would have received alternative block locations which would
> not contain the decommissioned data nodes. As the above NPE leaves the
> non-resolving data node in the list of block locations the DFSInputStream
> never refreshes the block locations and all attempts to open a BlockReader
> for the given blocks will fail.
> In our case, we resolved the NPE by closing and re-opening every
> DFSInputStream in the cluster to force a purge of the block locations cache.
> Ideally, the DFSInputStream would re-fetch all block locations for a host
> which can't be resolved in DNS or at least the blocks requested.
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