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From "genericqa (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15230) org.apache.hadoop.metrics2.GraphiteSink is not implemented correctly
Date Fri, 16 Feb 2018 09:15:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16366758#comment-16366758
] 

genericqa commented on HADOOP-15230:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 16s{color} | {color:blue}
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|| || || || {color:brown} Prechecks {color} ||
| {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} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 16m 55s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 13m 19s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 40s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  4s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 12m  2s{color}
| {color:green} branch has no errors when building and testing our client artifacts. {color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 28s{color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 53s{color} |
{color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 45s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 12m 15s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 12m 15s{color} | {color:green}
the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  0m 37s{color}
| {color:orange} hadoop-common-project/hadoop-common: The patch generated 9 new + 3 unchanged
- 253 fixed = 12 total (was 256) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  2s{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} shadedclient {color} | {color:green} 10m 10s{color}
| {color:green} patch has no errors when building and testing our client artifacts. {color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 57s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 56s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  9m 23s{color} | {color:green}
hadoop-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 33s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 83m 58s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | HADOOP-15230 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12910882/HADOOP-15230.006.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  shadedclient
 findbugs  checkstyle  |
| uname | Linux 146f118dc091 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18 11:55:51 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / a1e05e0 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| checkstyle | https://builds.apache.org/job/PreCommit-HADOOP-Build/14148/artifact/out/diff-checkstyle-hadoop-common-project_hadoop-common.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/14148/testReport/ |
| Max. process+thread count | 1649 (vs. ulimit of 5500) |
| modules | C: hadoop-common-project/hadoop-common U: hadoop-common-project/hadoop-common
|
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/14148/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> org.apache.hadoop.metrics2.GraphiteSink is not implemented correctly
> --------------------------------------------------------------------
>
>                 Key: HADOOP-15230
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15230
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: metrics
>            Reporter: Howard Yoo
>            Priority: Major
>              Labels: GraphiteSink,, metrics
>         Attachments: HADOOP-15230.006.patch
>
>
> org.apache.hadoop.metrics2.GraphiteSink's implementation has certain problems that would
make it to generate metrics incorrectly.
> The problem lies with line 77 ~ 84 of the GraphiteSink java:
> {code:java}
> for (MetricsTag tag : record.tags()) {
> if (tag.value() != null) {
> metricsPathPrefix.append(".");
> metricsPathPrefix.append(tag.name());
> metricsPathPrefix.append("=");
> metricsPathPrefix.append(tag.value());
> }
> }
> {code}
> It produces point tags having name=value pair in the metrics. However, notice how the
tags are added with '.' as its delimiters. Rather than using the '.' character, it should
follow the following convention mentioned in the latest graphite doc of using ';' character.
> [http://graphite.readthedocs.io/en/latest/tags.html]
> Also, the value is not properly being escaped, meaning that if the value has a '.' character
in it, it will easily confuse Graphite to accept it as a delimiter, rather than the value.
A really good prime example is when the value is a hostname or ip address,
> {code:java}
> metrics.example.Hostname=this.is.a.hostname.and.this.is.Metrics 10.0{code}
> In this example, the since the value of the hostname contains '.', it is extremely hard
for the receiving end to determine which part is hostname and which part is the rest of the
metrics name. A good strategy is to convert any '.' character in the value to be converted
to other characters, such as '_'.
> However, the best way would be to follow the latest metrics convention of using ';'
> {code:java}
> metrics.example.and.this.is.Metrics;Hostname=this.is.a.hostname 10.0{code}



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