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Posted to common-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/06/20 13:15:00 UTC
[jira] [Work logged] (HADOOP-18190) s3a prefetching streams to collect iostats on prefetching operations
[ https://issues.apache.org/jira/browse/HADOOP-18190?focusedWorklogId=782977&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-782977 ]
ASF GitHub Bot logged work on HADOOP-18190:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 20/Jun/22 13:14
Start Date: 20/Jun/22 13:14
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on PR #4458:
URL: https://github.com/apache/hadoop/pull/4458#issuecomment-1160435200
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 22m 18s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 1s | | No case conflicting files found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain any @author tags. |
| +1 :green_heart: | test4tests | 0m 0s | | The patch appears to include 4 new or modified test files. |
|||| _ feature-HADOOP-18028-s3a-prefetch Compile Tests _ |
| +0 :ok: | mvndep | 15m 40s | | Maven dependency ordering for branch |
| +1 :green_heart: | mvninstall | 28m 15s | | feature-HADOOP-18028-s3a-prefetch passed |
| +1 :green_heart: | compile | 25m 12s | | feature-HADOOP-18028-s3a-prefetch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | compile | 21m 59s | | feature-HADOOP-18028-s3a-prefetch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 4m 35s | | feature-HADOOP-18028-s3a-prefetch passed |
| +1 :green_heart: | mvnsite | 3m 17s | | feature-HADOOP-18028-s3a-prefetch passed |
| +1 :green_heart: | javadoc | 2m 26s | | feature-HADOOP-18028-s3a-prefetch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javadoc | 2m 9s | | feature-HADOOP-18028-s3a-prefetch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 4m 40s | | feature-HADOOP-18028-s3a-prefetch passed |
| +1 :green_heart: | shadedclient | 24m 40s | | branch has no errors when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +0 :ok: | mvndep | 0m 24s | | Maven dependency ordering for patch |
| +1 :green_heart: | mvninstall | 1m 43s | | the patch passed |
| +1 :green_heart: | compile | 24m 18s | | the patch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javac | 24m 18s | | the patch passed |
| +1 :green_heart: | compile | 21m 52s | | the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 21m 52s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks issues. |
| +1 :green_heart: | checkstyle | 4m 27s | | the patch passed |
| +1 :green_heart: | mvnsite | 3m 14s | | the patch passed |
| +1 :green_heart: | javadoc | 2m 18s | | the patch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javadoc | 2m 8s | | the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 4m 50s | | the patch passed |
| +1 :green_heart: | shadedclient | 24m 52s | | patch has no errors when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 18m 17s | | hadoop-common in the patch passed. |
| -1 :x: | unit | 3m 7s | [/patch-unit-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4458/2/artifact/out/patch-unit-hadoop-tools_hadoop-aws.txt) | hadoop-aws in the patch passed. |
| +1 :green_heart: | asflicense | 1m 19s | | The patch does not generate ASF License warnings. |
| | | 272m 8s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.fs.s3a.read.TestS3InputStream |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4458/2/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/4458 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell |
| uname | Linux 25848760b625 4.15.0-175-generic #184-Ubuntu SMP Thu Mar 24 17:48:36 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | feature-HADOOP-18028-s3a-prefetch / c1216942604e65f400ed91a4c9fe7d3f2f0ced28 |
| Default Java | Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4458/2/testReport/ |
| Max. process+thread count | 1252 (vs. ulimit of 5500) |
| modules | C: hadoop-common-project/hadoop-common hadoop-tools/hadoop-aws U: . |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4458/2/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
This message was automatically generated.
Issue Time Tracking
-------------------
Worklog Id: (was: 782977)
Remaining Estimate: 0h
Time Spent: 10m
> s3a prefetching streams to collect iostats on prefetching operations
> --------------------------------------------------------------------
>
> Key: HADOOP-18190
> URL: https://issues.apache.org/jira/browse/HADOOP-18190
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Ahmar Suhail
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> There is a lot more happening in reads, so there's a lot more data to collect and publish in IO stats for us to view in a summary at the end of processes as well as get from the stream while it is active.
> Some useful ones would seem to be:
> counters
> * is in memory. using 0 or 1 here lets aggregation reports count total #of memory cached files.
> * prefetching operations executed
> * errors during prefetching
> gauges
> * number of blocks in cache
> * total size of blocks
> * active prefetches
> + active memory used
> duration tracking count/min/max/ave
> * time to fetch a block
> * time queued before the actual fetch begins
> * time a reader is blocked waiting for a block fetch to complete
> and some info on cache use itself
> * number of blocks discarded unread
> * number of prefetched blocks later used
> * number of backward seeks to a prefetched block
> * number of forward seeks to a prefetched block
> the key ones I care about are
> # memory consumption
> # can we determine if cache is working (reads with cache hit) and when it is not (misses, wasted prefetches)
> # time blocked on executors
> The stats need to be accessible on a stream even when closed, and aggregated into the FS. once we get per-thread stats contexts we can publish there too and collect in worker threads for reporting in task commits
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