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https://issues.apache.org/jira/browse/HDFS-16262?focusedWorklogId=707929&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-707929
]
ASF GitHub Bot logged work on HDFS-16262:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Jan/22 22:27
Start Date: 12/Jan/22 22:27
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #3527:
URL: https://github.com/apache/hadoop/pull/3527#issuecomment-1011507918
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 39s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | 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 2 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +0 :ok: | mvndep | 13m 28s | | Maven dependency ordering for branch |
| +1 :green_heart: | mvninstall | 25m 21s | | trunk passed |
| +1 :green_heart: | compile | 6m 16s | | trunk passed with JDK
Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | compile | 5m 47s | | trunk passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 1m 22s | | trunk passed |
| +1 :green_heart: | mvnsite | 2m 30s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 55s | | trunk passed with JDK
Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | javadoc | 2m 27s | | trunk passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 6m 49s | | trunk passed |
| +1 :green_heart: | shadedclient | 25m 56s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +0 :ok: | mvndep | 0m 28s | | Maven dependency ordering for patch |
| +1 :green_heart: | mvninstall | 2m 23s | | the patch passed |
| +1 :green_heart: | compile | 6m 21s | | the patch passed with JDK
Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | javac | 6m 21s | | the patch passed |
| +1 :green_heart: | compile | 5m 36s | | the patch passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 5m 36s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 1m 4s | | the patch passed |
| +1 :green_heart: | mvnsite | 2m 14s | | the patch passed |
| +1 :green_heart: | xml | 0m 2s | | The patch has no ill-formed XML
file. |
| +1 :green_heart: | javadoc | 1m 31s | | the patch passed with JDK
Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04 |
| +1 :green_heart: | javadoc | 1m 59s | | the patch passed with JDK
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 6m 32s | | the patch passed |
| +1 :green_heart: | shadedclient | 26m 31s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 2m 30s | | hadoop-hdfs-client in the patch
passed. |
| -1 :x: | unit | 232m 0s |
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3527/15/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
| hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 43s | | The patch does not
generate ASF License warnings. |
| | | 379m 44s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.hdfs.TestRollingUpgrade |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3527/15/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/3527 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell xml |
| uname | Linux a1c99da05f39 4.15.0-161-generic #169-Ubuntu SMP Fri Oct 15
13:41:54 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 54096317ed298d57ba490bd1ddfc693c331546ba |
| Default Java | Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.13+8-Ubuntu-0ubuntu1.20.04
/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-3527/15/testReport/ |
| Max. process+thread count | 3222 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-client
hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3527/15/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 |
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Issue Time Tracking
-------------------
Worklog Id: (was: 707929)
Time Spent: 4h (was: 3h 50m)
> Async refresh of cached locations in DFSInputStream
> ---------------------------------------------------
>
> Key: HDFS-16262
> URL: https://issues.apache.org/jira/browse/HDFS-16262
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Bryan Beaudreault
> Assignee: Bryan Beaudreault
> Priority: Major
> Labels: pull-request-available
> Time Spent: 4h
> Remaining Estimate: 0h
>
> HDFS-15119 added the ability to invalidate cached block locations in
> DFSInputStream. As written, the feature will affect all DFSInputStreams
> regardless of whether they need it or not. The invalidation also only applies
> on the next request, so the next request will pay the cost of calling
> openInfo before reading the data.
> I'm working on a feature for HBase which enables efficient healing of
> locality through Balancer-style low level block moves (HBASE-26250). I'd like
> to utilize the idea started in HDFS-15119 in order to update DFSInputStreams
> after blocks have been moved to local hosts.
> I was considering using the feature as is, but some of our clusters are quite
> large and I'm concerned about the impact on the namenode:
> * We have some clusters with over 350k StoreFiles, so that'd be 350k
> DFSInputStreams. With such a large number and very active usage, having the
> refresh be in-line makes it too hard to ensure we don't DDOS the NameNode.
> * Currently we need to pay the price of openInfo the next time a
> DFSInputStream is invoked. Moving that async would minimize the latency hit.
> Also, some StoreFiles might be far less frequently accessed, so they may live
> on for a long time before ever refreshing. We'd like to be able to know that
> all DFSInputStreams are refreshed by a given time.
> * We may have 350k files, but only a small percentage of them are ever
> non-local at a given time. Refreshing only if necessary will save a lot of
> work.
> In order to make this as painless to end users as possible, I'd like to:
> * Update the implementation to utilize an async thread for managing
> refreshes. This will give more control over rate limiting across all
> DFSInputStreams in a DFSClient, and also ensure that all DFSInputStreams are
> refreshed.
> * Only refresh files which are lacking a local replica or have known
> deadNodes to be cleaned up
>
>
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