[
https://issues.apache.org/jira/browse/HDDS-1785?focusedWorklogId=276006&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-276006
]
ASF GitHub Bot logged work on HDDS-1785:
----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Jul/19 16:04
Start Date: 12/Jul/19 16:04
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on issue #1085: HDDS-1785. OOM
error in Freon due to the concurrency handling
URL: https://github.com/apache/hadoop/pull/1085#issuecomment-510942107
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Comment |
|:----:|----------:|--------:|:--------|
| 0 | reexec | 71 | Docker mode activated. |
||| _ Prechecks _ |
| +1 | dupname | 0 | No case conflicting files found. |
| +1 | @author | 0 | The patch does not contain any @author tags. |
| -1 | test4tests | 0 | 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. |
||| _ trunk Compile Tests _ |
| +1 | mvninstall | 482 | trunk passed |
| +1 | compile | 248 | trunk passed |
| +1 | checkstyle | 68 | trunk passed |
| +1 | mvnsite | 0 | trunk passed |
| +1 | shadedclient | 905 | branch has no errors when building and testing
our client artifacts. |
| +1 | javadoc | 154 | trunk passed |
| 0 | spotbugs | 317 | Used deprecated FindBugs config; considering
switching to SpotBugs. |
| +1 | findbugs | 504 | trunk passed |
||| _ Patch Compile Tests _ |
| +1 | mvninstall | 535 | the patch passed |
| +1 | compile | 310 | the patch passed |
| +1 | javac | 310 | the patch passed |
| +1 | checkstyle | 79 | the patch passed |
| +1 | mvnsite | 0 | the patch passed |
| +1 | whitespace | 0 | The patch has no whitespace issues. |
| +1 | shadedclient | 724 | patch has no errors when building and testing
our client artifacts. |
| +1 | javadoc | 153 | the patch passed |
| +1 | findbugs | 608 | the patch passed |
||| _ Other Tests _ |
| +1 | unit | 353 | hadoop-hdds in the patch passed. |
| -1 | unit | 198 | hadoop-ozone in the patch failed. |
| +1 | asflicense | 36 | The patch does not generate ASF License warnings. |
| | | 5596 | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests |
hadoop.ozone.om.ratis.TestOzoneManagerDoubleBufferWithOMResponse |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | Client=18.09.7 Server=18.09.7 base:
https://builds.apache.org/job/hadoop-multibranch/job/PR-1085/2/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/1085 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient findbugs checkstyle |
| uname | Linux e9107caa267d 4.15.0-48-generic #51-Ubuntu SMP Wed Apr 3
08:28:49 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/hadoop.sh |
| git revision | trunk / 190e434 |
| Default Java | 1.8.0_212 |
| unit |
https://builds.apache.org/job/hadoop-multibranch/job/PR-1085/2/artifact/out/patch-unit-hadoop-ozone.txt
|
| Test Results |
https://builds.apache.org/job/hadoop-multibranch/job/PR-1085/2/testReport/ |
| Max. process+thread count | 370 (vs. ulimit of 5500) |
| modules | C: hadoop-ozone/tools U: hadoop-ozone/tools |
| Console output |
https://builds.apache.org/job/hadoop-multibranch/job/PR-1085/2/console |
| versions | git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1 |
| Powered by | Apache Yetus 0.10.0 http://yetus.apache.org |
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Issue Time Tracking
-------------------
Worklog Id: (was: 276006)
Time Spent: 40m (was: 0.5h)
> OOM error in Freon due to the concurrency handling
> --------------------------------------------------
>
> Key: HDDS-1785
> URL: https://issues.apache.org/jira/browse/HDDS-1785
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Reporter: Elek, Marton
> Assignee: Doroszlai, Attila
> Priority: Blocker
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> HDDS-1532 modified the concurrent framework usage of Freon
> (RandomKeyGenerator).
> The new approach uses separated tasks (Runnable) to create the
> volumes/buckets/keys.
> Unfortunately it doesn't work very well in some cases.
> # When Freon starts it creates an executor with fixed number of threads (10)
> # The first loop submits numOfVolumes (10) VolumeProcessor tasks to the
> executor
> # The 10 threads starts to execute the 10 VolumeProcessor tasks
> # Each VolumeProcessor tasks creates numOfBuckets (1000) BucketProcessor
> tasks. All together 10000 tasks are submitted to the executor.
> # The 10 threads starts to execute the first 10 BucketProcessor tasks, they
> starts to create the KeyProcessor tasks: 500 000 * 10 tasks are submitted.
> # At this point of the time no keys are generated, but the next 10
> BucketProcessor tasks are started to execute..
> # To execute the first key creation we should process all the
> BucketProcessor tasks which means that all the Key creation tasks (10 * 1000
> * 500 000) are created and added to the executor
> # Which requires a huge amount of time and memory
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