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https://issues.apache.org/jira/browse/HDFS-9949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15199255#comment-15199255
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Hadoop QA commented on HDFS-9949:
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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} 7m
17s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 49s
{color} | {color:green} trunk passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 41s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
19s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 51s
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
12s {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} 1m 19s
{color} | {color:green} trunk passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 1s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
48s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 50s
{color} | {color:green} the patch passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 50s
{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 v1.7.0_95 {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} checkstyle {color} | {color:green} 0m
18s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 52s
{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} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
16s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 9s
{color} | {color:green} the patch passed with JDK v1.8.0_74 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 46s
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 67m 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 46s {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
21s {color} | {color:green} Patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 154m 45s {color}
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_74 Failed junit tests |
hadoop.hdfs.server.blockmanagement.TestRBWBlockInvalidation |
| | hadoop.hdfs.server.namenode.ha.TestFailureToReadEdits |
| | hadoop.hdfs.server.datanode.TestDataNodeMetrics |
| JDK v1.7.0_95 Failed junit tests | hadoop.hdfs.server.namenode.TestEditLog |
| | hadoop.hdfs.server.namenode.ha.TestInitializeSharedEdits |
| | hadoop.metrics2.sink.TestRollingFileSystemSinkWithSecureHdfs |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:0ca8df7 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12793903/HDFS-9949.001.patch |
| JIRA Issue | HDFS-9949 |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux 4dcd854b876c 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 / 02a250d |
| 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 |
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/14848/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_74.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/14848/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/14848/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_74.txt
https://builds.apache.org/job/PreCommit-HDFS-Build/14848/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/14848/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/14848/console |
| Powered by | Apache Yetus 0.2.0 http://yetus.apache.org |
This message was automatically generated.
> Testcase for catching DN UUID regeneration regression
> -----------------------------------------------------
>
> Key: HDFS-9949
> URL: https://issues.apache.org/jira/browse/HDFS-9949
> Project: Hadoop HDFS
> Issue Type: Test
> Affects Versions: 2.6.0
> Reporter: Harsh J
> Assignee: Harsh J
> Priority: Minor
> Attachments: HDFS-9949.000.branch-2.7.not-for-commit.patch,
> HDFS-9949.000.patch, HDFS-9949.001.patch
>
>
> In the following scenario, in releases without HDFS-8211, the DN may
> regenerate its UUIDs unintentionally.
> 0. Consider a DN with two disks {{/data1/dfs/dn,/data2/dfs/dn}}
> 1. Stop DN
> 2. Unmount the second disk, {{/data2/dfs/dn}}
> 3. Create (in the scenario, this was an accident) /data2/dfs/dn on the root
> path
> 4. Start DN
> 5. DN now considers /data2/dfs/dn empty so formats it, but during the format
> it uses {{datanode.getDatanodeUuid()}} which is null until register() is
> called.
> 6. As a result, after the directory loading, {{datanode.checkDatanodUuid()}}
> gets called with successful condition, and it causes a new generation of UUID
> which is written to all disks {{/data1/dfs/dn/current/VERSION}} and
> {{/data2/dfs/dn/current/VERSION}}.
> 7. Stop DN (in the scenario, this was when the mistake of unmounted disk was
> realised)
> 8. Mount the second disk back again {{/data2/dfs/dn}}, causing the
> {{VERSION}} file to be the original one again on it (mounting masks the root
> path that we last generated upon).
> 9. DN fails to start up cause it finds mismatched UUID between the two disks,
> with an error similar to:
> {code}WARN org.apache.hadoop.hdfs.server.common.Storage:
> org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory
> /data/2/dfs/dn is in an inconsistent state: Root /data/2/dfs/dn:
> DatanodeUuid=fe3a848f-beb8-4fcb-9581-c6fb1c701cc4, does not match
> 8ea9493c-7097-4ee3-96a3-0cc4dfc1d6ac from other StorageDirectory.{code}
> The DN should not generate a new UUID if one of the storage disks already
> have the older one.
> HDFS-8211 unintentionally fixes this by changing the
> {{datanode.getDatanodeUuid()}} function to rely on the {{DataStorage}}
> representation of the UUID vs. the {{DatanodeID}} object which only gets
> available (non-null) _after_ the registration.
> It'd still be good to add a direct test case to the above scenario that
> passes on trunk and branch-2, but fails on branch-2.7 and lower, so we can
> catch a regression around this in future.
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