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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8150) Make getFileChecksum fail for blocks under construction
Date Tue, 28 Apr 2015 17:01:08 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14517413#comment-14517413
] 

Hadoop QA commented on HDFS-8150:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  14m 38s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags.
|
| {color:green}+1{color} | tests included |   0m  0s | The patch appears to include 1 new
or modified test files. |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | javac |   7m 29s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 33s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does not increase
the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   3m 57s | There were no new checkstyle issues. |
| {color:green}+1{color} | install |   1m 33s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   3m  2s | The patch does not introduce any new Findbugs
(version 2.0.3) warnings. |
| {color:green}+1{color} | native |   3m 19s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 185m 26s | Tests failed in hadoop-hdfs. |
| | | 230m  1s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.server.namenode.snapshot.TestSnapshotFileLength |
|   | hadoop.hdfs.TestGetFileChecksum |
| Timed out tests | org.apache.hadoop.hdfs.server.blockmanagement.TestDatanodeManager |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12728782/HDFS-8150.1.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 99fe03e |
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/10430/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/10430/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf903.gq1.ygridcore.net 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 |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/10430/console |


This message was automatically generated.

> Make getFileChecksum fail for blocks under construction
> -------------------------------------------------------
>
>                 Key: HDFS-8150
>                 URL: https://issues.apache.org/jira/browse/HDFS-8150
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: J.Andreina
>            Priority: Critical
>         Attachments: HDFS-8150.1.patch
>
>
> We have seen the cases of validating data copy using checksum then the content of target
changing. It turns out the target wasn't closed successfully, so it was still under-construction.
 One hour later, a lease recovery kicked in and truncated the block.
> Although this can be prevented in many ways, if there is no valid use case for getting
file checksum from under-construction blocks, can it be disabled?  E.g. Datanode can throw
an exception if the replica is not in the finalized state.



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