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Posted to common-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2015/08/15 23:43:45 UTC

[jira] [Commented] (HADOOP-12326) Implement ChecksumFileSystem#getFileChecksum equivalent to HDFS for easy check

    [ https://issues.apache.org/jira/browse/HADOOP-12326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14698465#comment-14698465 ] 

Hadoop QA commented on HADOOP-12326:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  16m 39s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags. |
| {color:red}-1{color} | tests included |   0m  0s | The patch doesn't appear to include any new or modified tests.  Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. |
| {color:green}+1{color} | javac |   7m 47s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 46s | 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:red}-1{color} | checkstyle |   1m  7s | The applied patch generated  3 new checkstyle issues (total was 60, now 60). |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 1  line(s) that end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 19s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 52s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. |
| {color:red}-1{color} | common tests |  22m 24s | Tests failed in hadoop-common. |
| | |  61m 53s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.net.TestNetUtils |
|   | hadoop.fs.TestFilterFileSystem |
|   | hadoop.ha.TestZKFailoverController |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12750670/HADOOP-12326.001.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 8dfec7a |
| checkstyle |  https://builds.apache.org/job/PreCommit-HADOOP-Build/7484/artifact/patchprocess/diffcheckstylehadoop-common.txt |
| whitespace | https://builds.apache.org/job/PreCommit-HADOOP-Build/7484/artifact/patchprocess/whitespace.txt |
| hadoop-common test log | https://builds.apache.org/job/PreCommit-HADOOP-Build/7484/artifact/patchprocess/testrun_hadoop-common.txt |
| Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/7484/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf901.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-HADOOP-Build/7484/console |


This message was automatically generated.

> Implement ChecksumFileSystem#getFileChecksum equivalent to HDFS for easy check
> ------------------------------------------------------------------------------
>
>                 Key: HADOOP-12326
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12326
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.7.1
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>         Attachments: HADOOP-12326.001.patch
>
>
> If we have same-content files, one local and one remotely on HDFS (after downloading or uploading), getFileChecksum can provide a quick check whether they are consistent.  To this end, we can switch to CRC32C on local filesystem. The difference in block sizes does not matter, because for the local filesystem it's just a logical parameter.
> {code}
> $ hadoop fs -Dfs.local.block.size=134217728 -checksum file:${PWD}/part-m-00000 part-m-00000
> 15/08/15 13:30:02 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
> file:///Users/gshegalov/workspace/hadoop-common/part-m-00000	MD5-of-262144MD5-of-512CRC32C	000002000000000000040000e84fb07f8c9d4ef3acb5d1983a7e2a68
> part-m-00000	MD5-of-262144MD5-of-512CRC32C	000002000000000000040000e84fb07f8c9d4ef3acb5d1983a7e2a68
> {code}



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