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https://issues.apache.org/jira/browse/HDFS-8836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14768962#comment-14768962
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Hadoop QA commented on HDFS-8836:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 20m 48s | 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 2 new or modified test files. |
| {color:green}+1{color} | javac | 8m 6s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 10m 20s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 26s | The applied patch does
not increase the total number of release audit warnings. |
| {color:green}+1{color} | site | 3m 8s | Site still builds. |
| {color:red}-1{color} | checkstyle | 1m 9s | The applied patch generated 1
new checkstyle issues (total was 44, now 41). |
| {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 31s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 33s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 1m 56s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | common tests | 23m 54s | Tests passed in
hadoop-common. |
| | | 71m 56s | |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12756238/HDFS-8836-05.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle site |
| git revision | trunk / bf2f2b4 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/12479/artifact/patchprocess/diffcheckstylehadoop-common.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-HDFS-Build/12479/artifact/patchprocess/whitespace.txt
|
| hadoop-common test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/12479/artifact/patchprocess/testrun_hadoop-common.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/12479/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf909.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/12479/console |
This message was automatically generated.
> Skip newline on empty files with getMerge -nl
> ---------------------------------------------
>
> Key: HDFS-8836
> URL: https://issues.apache.org/jira/browse/HDFS-8836
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client
> Affects Versions: 2.6.0, 2.7.1
> Reporter: Jan Filipiak
> Assignee: Kanaka Kumar Avvaru
> Priority: Trivial
> Attachments: HDFS-8836-01.patch, HDFS-8836-02.patch,
> HDFS-8836-03.patch, HDFS-8836-04.patch, HDFS-8836-05.patch
>
>
> Hello everyone,
> I recently was in the need of using the new line option -nl with getMerge
> because the files I needed to merge simply didn't had one. I was merging all
> the files from one directory and unfortunately this directory also included
> empty files, which effectively led to multiple newlines append after some
> files. I needed to remove them manually afterwards.
> In this situation it is maybe good to have another argument that allows
> skipping empty files.
> Thing one could try to implement this feature:
> The call for IOUtils.copyBytes(in, out, getConf(), false); doesn't
> return the number of bytes copied which would be convenient as one could
> skip append the new line when 0 bytes where copied or one would check the
> file size before.
> I posted this Idea on the mailing list
> http://mail-archives.apache.org/mod_mbox/hadoop-user/201507.mbox/%3C55B25140.3060005%40trivago.com%3E
> but I didn't really get many responses, so I thought I my try this way.
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