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From "genericqa (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15446) WASB: PageBlobInputStream.skip breaks HBASE replication
Date Tue, 08 May 2018 04:55:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16466862#comment-16466862
] 

genericqa commented on HADOOP-15446:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 26s{color} | {color:blue}
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| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  0s{color} | {color:blue}
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| {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} branch-2 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 16m 15s{color}
| {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 23s{color} |
{color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 17s{color}
| {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 31s{color} |
{color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 21s{color} |
{color:green} branch-2 passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 24s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 21s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 21s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  0m 12s{color}
| {color:orange} hadoop-tools/hadoop-azure: The patch generated 20 new + 3 unchanged - 0 fixed
= 23 total (was 3) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 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} javadoc {color} | {color:green}  0m 16s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m  3s{color} | {color:green}
hadoop-azure in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 23s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 22m 12s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:f667ef1 |
| JIRA Issue | HADOOP-15446 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12922393/HADOOP-15446-branch-2.001.patch
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| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  shadedclient
 findbugs  checkstyle  |
| uname | Linux 0b0a6a021c83 3.13.0-137-generic #186-Ubuntu SMP Mon Dec 4 19:09:19 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | branch-2 / 5679920 |
| maven | version: Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T16:41:47+00:00)
|
| Default Java | 1.7.0_171 |
| checkstyle | https://builds.apache.org/job/PreCommit-HADOOP-Build/14600/artifact/out/diff-checkstyle-hadoop-tools_hadoop-azure.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/14600/testReport/ |
| Max. process+thread count | 190 (vs. ulimit of 10000) |
| modules | C: hadoop-tools/hadoop-azure U: hadoop-tools/hadoop-azure |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/14600/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> WASB: PageBlobInputStream.skip breaks HBASE replication
> -------------------------------------------------------
>
>                 Key: HADOOP-15446
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15446
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/azure
>    Affects Versions: 2.9.0, 3.0.2
>            Reporter: Thomas Marquardt
>            Assignee: Thomas Marquardt
>            Priority: Major
>         Attachments: HADOOP-15446-001.patch, HADOOP-15446-002.patch, HADOOP-15446-003.patch,
HADOOP-15446-branch-2.001.patch
>
>
> Page Blobs are primarily used by HBASE.  HBASE replication, which apparently has not
been used with WASB until recently, performs non-sequential reads on log files using PageBlobInputStream. 
There are bugs in this stream implementation which prevent skip and seek from working properly, and
eventually the stream state becomes corrupt and unusable.
> I believe this bug affects all releases of WASB/HADOOP.  It appears to be a day-0 bug
in PageBlobInputStream.  There were similar bugs opened in the past (HADOOP-15042) but the
issue was not properly fixed, and no test coverage was added.



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