[jira] [Commented] (HDFS-14959) [SBNN read] access time should be turned off
[ https://issues.apache.org/jira/browse/HDFS-14959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16972736#comment-16972736 ] Hudson commented on HDFS-14959: --- SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17636 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/17636/]) HDFS-14959: [SBNN read] access time should be turned off (#1706) (weichiu: rev 97ec34e117af71e1a9950b8002131c45754009c7) * (edit) hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ObserverNameNode.md > [SBNN read] access time should be turned off > > > Key: HDFS-14959 > URL: https://issues.apache.org/jira/browse/HDFS-14959 > Project: Hadoop HDFS > Issue Type: Task > Components: documentation >Reporter: Wei-Chiu Chuang >Assignee: Chao Sun >Priority: Major > Fix For: 3.3.0, 3.1.4, 3.2.2 > > > Both Uber and Didi shared that access time has to be switched off to avoid > spiky NameNode RPC process time. If access time is not off entirely, > getBlockLocations RPCs have to update access time and must access the active > NameNode. (that's my understanding. haven't checked the code) > We should record this as a best practice in our doc. > (If you are on the ASF slack, check out this thread > https://the-asf.slack.com/archives/CAD7C52Q3/p1572033324008600) -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-14959) [SBNN read] access time should be turned off
[
https://issues.apache.org/jira/browse/HDFS-14959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16970525#comment-16970525
]
Hadoop QA commented on HDFS-14959:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 1m
24s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green} 0m
0s{color} | {color:green} No case conflicting files found. {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:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 22m
38s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
24s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
38m 47s{color} | {color:green} branch has no errors when building and testing
our client artifacts. {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
12s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
20s{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}
14m 43s{color} | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
30s{color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black} 59m 52s{color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.4 Server=19.03.4 base:
https://builds.apache.org/job/hadoop-multibranch/job/PR-1706/1/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/1706 |
| JIRA Issue | HDFS-14959 |
| Optional Tests | dupname asflicense mvnsite |
| uname | Linux 66ca89553e90 4.15.0-66-generic #75-Ubuntu SMP Tue Oct 1
05:24:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/hadoop.sh |
| git revision | trunk / 42fc888 |
| Max. process+thread count | 307 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/hadoop-multibranch/job/PR-1706/1/console |
| versions | git=2.7.4 maven=3.3.9 |
| Powered by | Apache Yetus 0.10.0 http://yetus.apache.org |
This message was automatically generated.
> [SBNN read] access time should be turned off
>
>
> Key: HDFS-14959
> URL: https://issues.apache.org/jira/browse/HDFS-14959
> Project: Hadoop HDFS
> Issue Type: Task
> Components: documentation
>Reporter: Wei-Chiu Chuang
>Assignee: Chao Sun
>Priority: Major
>
> Both Uber and Didi shared that access time has to be switched off to avoid
> spiky NameNode RPC process time. If access time is not off entirely,
> getBlockLocations RPCs have to update access time and must access the active
> NameNode. (that's my understanding. haven't checked the code)
> We should record this as a best practice in our doc.
> (If you are on the ASF slack, check out this thread
> https://the-asf.slack.com/archives/CAD7C52Q3/p1572033324008600)
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[jira] [Commented] (HDFS-14959) [SBNN read] access time should be turned off
[ https://issues.apache.org/jira/browse/HDFS-14959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16968686#comment-16968686 ] Chao Sun commented on HDFS-14959: - This is a good idea. I thought we mentioned this in the doc but apparently not. I can add it. > [SBNN read] access time should be turned off > > > Key: HDFS-14959 > URL: https://issues.apache.org/jira/browse/HDFS-14959 > Project: Hadoop HDFS > Issue Type: Task > Components: documentation >Reporter: Wei-Chiu Chuang >Priority: Major > > Both Uber and Didi shared that access time has to be switched off to avoid > spiky NameNode RPC process time. If access time is not off entirely, > getBlockLocations RPCs have to update access time and must access the active > NameNode. (that's my understanding. haven't checked the code) > We should record this as a best practice in our doc. > (If you are on the ASF slack, check out this thread > https://the-asf.slack.com/archives/CAD7C52Q3/p1572033324008600) -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-14959) [SBNN read] access time should be turned off
[ https://issues.apache.org/jira/browse/HDFS-14959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16968615#comment-16968615 ] Ayush Saxena commented on HDFS-14959: - Well something related discussion is there at HDFS-14870 > [SBNN read] access time should be turned off > > > Key: HDFS-14959 > URL: https://issues.apache.org/jira/browse/HDFS-14959 > Project: Hadoop HDFS > Issue Type: Task > Components: documentation >Reporter: Wei-Chiu Chuang >Priority: Major > > Both Uber and Didi shared that access time has to be switched off to avoid > spiky NameNode RPC process time. If access time is not off entirely, > getBlockLocations RPCs have to update access time and must access the active > NameNode. (that's my understanding. haven't checked the code) > We should record this as a best practice in our doc. > (If you are on the ASF slack, check out this thread > https://the-asf.slack.com/archives/CAD7C52Q3/p1572033324008600) -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-14959) [SBNN read] access time should be turned off
[ https://issues.apache.org/jira/browse/HDFS-14959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16968599#comment-16968599 ] Wei-Chiu Chuang commented on HDFS-14959: [~csun] [~xkrogen] may i have your opinion? is it also turned off at LinkedIn? > [SBNN read] access time should be turned off > > > Key: HDFS-14959 > URL: https://issues.apache.org/jira/browse/HDFS-14959 > Project: Hadoop HDFS > Issue Type: Task > Components: documentation >Reporter: Wei-Chiu Chuang >Priority: Major > > Both Uber and Didi shared that access time has to be switched off to avoid > spiky NameNode RPC process time. If access time is not off entirely, > getBlockLocations RPCs have to update access time and must access the active > NameNode. (that's my understanding. haven't checked the code) > We should record this as a best practice in our doc. > (If you are on the ASF slack, check out this thread > https://the-asf.slack.com/archives/CAD7C52Q3/p1572033324008600) -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
