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Posted to hdfs-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2016/11/22 06:09:00 UTC
[jira] [Commented] (HDFS-11160) VolumeScanner reports
write-in-progress replicas as corrupt incorrectly
[ https://issues.apache.org/jira/browse/HDFS-11160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15685810#comment-15685810 ]
Hadoop QA commented on HDFS-11160:
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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 11s{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: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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 32s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 55s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 35s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 12s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 17s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 0s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 44s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 53s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 26s{color} | {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch generated 11 new + 105 unchanged - 1 fixed = 116 total (was 106) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 57s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 12s{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} findbugs {color} | {color:green} 2m 4s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 43s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 80m 15s{color} | {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m 20s{color} | {color:red} The patch generated 2 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}102m 32s{color} | {color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.TestPread |
| | hadoop.hdfs.TestSetrepIncreasing |
| | hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup |
| | hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes |
| | hadoop.hdfs.server.datanode.TestReadOnlySharedStorage |
| | hadoop.hdfs.server.balancer.TestBalancerWithSaslDataTransfer |
| | hadoop.hdfs.server.balancer.TestBalancer |
| | hadoop.hdfs.server.balancer.TestBalancerWithEncryptedTransfer |
| | hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFS |
| | hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes |
| | hadoop.hdfs.TestHDFSFileSystemContract |
| | hadoop.hdfs.TestSmallBlock |
| | hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped |
| | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure |
| | hadoop.hdfs.TestDFSStripedInputStream |
| Timed out junit tests | org.apache.hadoop.hdfs.TestReplication |
| | org.apache.hadoop.hdfs.TestInjectionForSimulatedStorage |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:a9ad5d6 |
| JIRA Issue | HDFS-11160 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12839943/HDFS-11160.001.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite unit findbugs checkstyle |
| uname | Linux 87d2b0966d24 3.13.0-93-generic #140-Ubuntu SMP Mon Jul 18 21:21:05 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 6f80742 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/17627/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt |
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/17627/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt |
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/17627/testReport/ |
| asflicense | https://builds.apache.org/job/PreCommit-HDFS-Build/17627/artifact/patchprocess/patch-asflicense-problems.txt |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/17627/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> VolumeScanner reports write-in-progress replicas as corrupt incorrectly
> -----------------------------------------------------------------------
>
> Key: HDFS-11160
> URL: https://issues.apache.org/jira/browse/HDFS-11160
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Environment: CDH5.7.4
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Attachments: HDFS-11160.001.patch, HDFS-11160.reproduce.patch
>
>
> Due to a race condition initially reported in HDFS-6804, VolumeScanner may erroneously detect good replicas as corrupt. This is serious because in some cases it results in data loss if all replicas are declared corrupt.
> We are investigating an incidence that caused very high block corruption rate in a relatively small cluster. Initially, we thought HDFS-11056 is to blame. However, after applying HDFS-11056, we are still seeing VolumeScanner reporting corrupt replicas.
> It turns out that if a replica is being appended while VolumeScanner is scanning it, VolumeScanner may use the new checksum to compare against old data, causing checksum mismatch.
> I have a unit test to reproduce the error. Will attach later.
> To fix it, I propose a FinalizedReplica object should also have a lastChecksum field like ReplicaBeingWritten, and BlockSender should use the in-memory lastChecksum to verify the partial data in the last chunk on disk. File this jira to discuss a good fix for this issue.
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