[jira] [Commented] (HADOOP-12473) distcp's ignoring failures should be mutually exclusive with the atomic option
[
https://issues.apache.org/jira/browse/HADOOP-12473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15067214#comment-15067214
]
Mithun Radhakrishnan commented on HADOOP-12473:
---
[~jira.shegalov], [~liuml07], could you please explain the reasoning behind
this fix?
If I understand correctly, Gera's orthogonal suggestion in HADOOP-12469 was to
make {{-atomic}} and {{-i}} mutually exclusive. The latest patch in this JIRA
doesn't seem to address this concern, AFAICT. It makes {{ignoreFailures}} an
{{AtomicBoolean}}, which is not what Gera was getting at, I believe.
Also, [~jira.shegalov], why do you recommend that {{-atomic}} and {{-i}} be
mutually exclusive? Aren't they orthogonal concerns? Why consider {{-atomic}}
as incapable of ignoring copy-errors?
> distcp's ignoring failures should be mutually exclusive with the atomic option
> --
>
> Key: HADOOP-12473
> URL: https://issues.apache.org/jira/browse/HADOOP-12473
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 2.7.1
>Reporter: Mingliang Liu
>Assignee: Mingliang Liu
> Fix For: 2.8.0
>
> Attachments: HADOOP-12473.000.patch, HADOOP-12473.001.patch,
> HADOOP-12473.002.patch
>
>
> In {{CopyMapper::handleFailure}}, the mapper handles failure and will ignore
> it if no it's config key is on. Ignoring failures should be mutually
> exclusive with the atomic option otherwise an incomplete dir is eligible for
> commit defeating the purpose.
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[jira] [Commented] (HADOOP-12473) distcp's ignoring failures should be mutually exclusive with the atomic option
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https://issues.apache.org/jira/browse/HADOOP-12473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14986966#comment-14986966
]
Hadoop QA commented on HADOOP-12473:
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{color} | {color:green} hadoop-distcp in the patch passed with JDK v1.8.0_60.
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 7m 8s
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\\
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|| Subsystem || Report/Notes ||
| Docker | Client=1.7.1 Server=1.7.1
Image:test-patch-base-hadoop-date2015-11-03 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12770269/HADOOP-12473.002.patch
|
| JIRA Issue | HADOOP-12473 |
| Optional Tests | asflicense javac javadoc mvninstall unit findbugs
checkstyle compile |
| uname | Linux e780ee62a63b 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 |
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/home/jenkins/jenkins-slave/workspace/PreCommit-HADOOP-Build/patchprocess/apache-yetus-1a9afee/precommit/personality/hadoop.sh
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| git revision | trunk / 957f031 |
| Default Java | 1.7.0_79 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_60
/
[jira] [Commented] (HADOOP-12473) distcp's ignoring failures should be mutually exclusive with the atomic option
[
https://issues.apache.org/jira/browse/HADOOP-12473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14986325#comment-14986325
]
Hadoop QA commented on HADOOP-12473:
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\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=1.7.1 Server=1.7.1
Image:test-patch-base-hadoop-date2015-11-02 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12770179/HADOOP-12473.001.patch
|
| JIRA Issue | HADOOP-12473 |
| Optional Tests | asflicense javac javadoc mvninstall unit findbugs
checkstyle compile |
| uname | Linux b8ee3fc70cc2 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 |
/home/jenkins/jenkins-slave/workspace/PreCommit-HADOOP-Build/patchprocess/apache-yetus-1a9afee/precommit/personality/hadoop.sh
|
| git revision | trunk / 78d6890 |
| Default Java | 1.7.0_79 |
| Multi-JDK versions | /usr/lib/jvm/java-8-ora
[jira] [Commented] (HADOOP-12473) distcp's ignoring failures should be mutually exclusive with the atomic option
[
https://issues.apache.org/jira/browse/HADOOP-12473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14984208#comment-14984208
]
Hadoop QA commented on HADOOP-12473:
| (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 4s
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| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s
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| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 14s
{color} | {color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 7m 24s
{color} | {color:green} hadoop-distcp in the patch passed with JDK v1.8.0_60.
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 6m 23s
{color} | {color:green} hadoop-distcp in the patch passed with JDK v1.7.0_79.
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
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| {color:black} {color} |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=1.7.1 Server=1.7.1
Image:test-patch-base-hadoop-date2015-10-31 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12769965/HADOOP-12473.000.patch
|
| JIRA Issue | HADOOP-12473 |
| Optional Tests | asflicense javac javadoc mvninstall unit findbugs
checkstyle compile |
| uname | Linux 2496d22548c4 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 |
/home/jenkins/jenkins-slave/workspace/PreCommit-HADOOP-Build/patchprocess/apache-yetus-e77b1ce/precommit/personality/hadoop.sh
|
| git revision | trunk / 7fd6416 |
| Default Java | 1.7.0_79 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_60
[jira] [Commented] (HADOOP-12473) distcp's ignoring failures should be mutually exclusive with the atomic option
[
https://issues.apache.org/jira/browse/HADOOP-12473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14983007#comment-14983007
]
Mingliang Liu commented on HADOOP-12473:
Thanks to your comment [~Prabhu Joseph]. I think the {{ignoreFailures}} is to
make the copy mapper ignore only {{RetriableFileCopyCommand.CopyReadException}}
failures? Sorry I don't have the context about MRv1.
> distcp's ignoring failures should be mutually exclusive with the atomic option
> --
>
> Key: HADOOP-12473
> URL: https://issues.apache.org/jira/browse/HADOOP-12473
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 2.7.1
>Reporter: Mingliang Liu
>Priority: Critical
> Fix For: 2.8.0
>
>
> In {{CopyMapper::handleFailure}}, the mapper handles failure and will ignore
> it if no it's config key is on. Ignoring failures should be mutually
> exclusive with the atomic option otherwise an incomplete dir is eligible for
> commit defeating the purpose.
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[jira] [Commented] (HADOOP-12473) distcp's ignoring failures should be mutually exclusive with the atomic option
[
https://issues.apache.org/jira/browse/HADOOP-12473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14982052#comment-14982052
]
Prabhu Joseph commented on HADOOP-12473:
[~liuml07] Hi, I am having a doubt on the below code of
org.apache.hadoop.tools.mapred.CopyMapper
if (ignoreFailures && exception.getCause() instanceof
RetriableFileCopyCommand.CopyReadException
Why we are using &&, if i use hadoop distcp -i , it has ignore any Exception
right. In MRV1 distcp org/apache/hadoop/tools/DistCp$CopyFilesMapper, it was ||
and it ignores any Exception. But in MRV2, it doesn't.
if (0 == failcount || ignoreReadFailures)
> distcp's ignoring failures should be mutually exclusive with the atomic option
> --
>
> Key: HADOOP-12473
> URL: https://issues.apache.org/jira/browse/HADOOP-12473
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 2.7.1
>Reporter: Mingliang Liu
>Priority: Critical
> Fix For: 2.8.0
>
>
> In {{CopyMapper::handleFailure}}, the mapper handles failure and will ignore
> it if no it's config key is on. Ignoring failures should be mutually
> exclusive with the atomic option otherwise an incomplete dir is eligible for
> commit defeating the purpose.
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