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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2021/08/10 15:24:59 UTC
[GitHub] [hadoop] tomscut opened a new pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
tomscut opened a new pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288
JIRA: [HDFS-16158](https://issues.apache.org/jira/browse/HDFS-16158)
Discover datanodes with unbalanced volume usage by the standard deviation
In some scenarios, we may cause unbalanced datanode disk usage:
1. Repair the damaged disk and make it online again.
2. Add disks to some Datanodes.
3. Some disks are damaged, resulting in slow data writing.
4. Use some custom volume choosing policies.
In the case of unbalanced disk usage, a sudden increase in datanode write traffic may result in busy disk I/O with low volume usage, resulting in decreased throughput across datanodes.
In this case, we need to find these nodes in time to do diskBalance, or other processing. Based on the volume usage of each datanode, we can calculate the standard deviation of the volume usage. The more unbalanced the volume, the higher the standard deviation.
To prevent the namenode from being too busy, we can calculate the standard variance on the datanode side, transmit it to the namenode through heartbeat, and display the result on the Web of namenode. We can then sort directly to find the nodes on the Web where the volumes usages are unbalanced.
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[GitHub] [hadoop] tomscut commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
tomscut commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-899173264
Hi @aajisaka , could you please help review the code. Thanks a lot.
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[GitHub] [hadoop] tomscut commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
tomscut commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-909761516
Hi @jojochuang , this PR has a lot of changes, which can make rolling updates difficult. I re-implemented this feature and will submit another PR later. Thank you for your review.
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[GitHub] [hadoop] hadoop-yetus commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-896425423
:broken_heart: **-1 overall**
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| | | 599m 53s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.hdfs.server.balancer.TestBalancerService |
| | hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup |
| | hadoop.hdfs.server.datanode.TestBPOfferService |
| | hadoop.hdfs.TestRead |
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| | hadoop.hdfs.server.balancer.TestBalancerWithEncryptedTransfer |
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[GitHub] [hadoop] hadoop-yetus commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-897054535
:broken_heart: **-1 overall**
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| +1 :green_heart: | asflicense | 0m 37s | | The patch does not generate ASF License warnings. |
| | | 421m 22s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.hdfs.server.mover.TestMover |
| | hadoop.hdfs.server.namenode.ha.TestEditLogTailer |
| | hadoop.hdfs.server.namenode.TestDecommissioningStatusWithBackoffMonitor |
| | hadoop.hdfs.server.namenode.TestDecommissioningStatus |
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[GitHub] [hadoop] tomscut commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
tomscut commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-897262834
These failed unit tests work fine locally.
Hi @tasanuma @jojochuang @Hexiaoqiao @ayushtkn , Could you please help review the code. Thanks.
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[GitHub] [hadoop] tomscut closed pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
tomscut closed pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288
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[GitHub] [hadoop] hadoop-yetus commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-896744785
:broken_heart: **-1 overall**
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|||| _ Other Tests _ |
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| +1 :green_heart: | asflicense | 0m 44s | | The patch does not generate ASF License warnings. |
| | | 619m 19s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.hdfs.server.balancer.TestBalancerService |
| | hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup |
| | hadoop.hdfs.server.datanode.TestBPOfferService |
| | hadoop.hdfs.TestRead |
| | hadoop.hdfs.TestSetrepIncreasing |
| | hadoop.hdfs.server.datanode.TestDataNodeInitStorage |
| | hadoop.hdfs.server.namenode.ha.TestEditLogTailer |
| | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure |
| | hadoop.hdfs.server.namenode.TestDecommissioningStatusWithBackoffMonitor |
| | hadoop.hdfs.server.namenode.TestDecommissioningStatus |
| | hadoop.hdfs.server.balancer.TestBalancerWithEncryptedTransfer |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/2/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/3288 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell cc buflint bufcompat jshint |
| uname | Linux eefc94db475c 4.15.0-143-generic #147-Ubuntu SMP Wed Apr 14 16:10:11 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
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| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/2/testReport/ |
| Max. process+thread count | 3126 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/2/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
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[GitHub] [hadoop] tomscut commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
tomscut commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-900221653
Thanks @jojochuang for your review, I will fix these problems ASAP.
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[GitHub] [hadoop] jojochuang commented on a change in pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
jojochuang commented on a change in pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#discussion_r690277334
##########
File path: hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
##########
@@ -3184,6 +3191,26 @@ public void shutdownBlockPool(String bpid) {
return info;
}
+ @Override
+ public float getVolumeUsageStdDev() {
+ Collection<VolumeInfo> volumeInfos = getVolumeInfo();
+ ArrayList<Float> usages = new ArrayList<Float>();
+ float totalDfsUsed = 0;
+ float dev = 0;
+ for (VolumeInfo v : volumeInfos) {
+ usages.add(v.volumeUsagePercent);
+ totalDfsUsed += v.volumeUsagePercent;
+ }
+
+ totalDfsUsed /= volumeInfos.size();
+ Collections.sort(usages);
+ for (Float usage : usages) {
+ dev += (usage - totalDfsUsed) * (usage - totalDfsUsed);
+ }
+ dev = (float) Math.sqrt(dev / usages.size());
Review comment:
can we add a check to ensure usages.size() never returns 0?
##########
File path: hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
##########
@@ -675,6 +675,10 @@ public long getDfsUsed() throws IOException {
return volumes.getDfsUsed();
}
+ public long setDfsUsed() throws IOException {
Review comment:
this API doesn't appear to be used.
##########
File path: hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
##########
@@ -6515,15 +6518,16 @@ public String getLiveNodes() {
.put("nonDfsUsedSpace", node.getNonDfsUsed())
.put("capacity", node.getCapacity())
.put("numBlocks", node.numBlocks())
- .put("version", node.getSoftwareVersion())
+ .put("version", "")
Review comment:
why is this removed?
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[GitHub] [hadoop] hadoop-yetus commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-896698116
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 55s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 1s | | No case conflicting files found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +0 :ok: | buf | 0m 0s | | buf was not available. |
| +0 :ok: | jshint | 0m 0s | | jshint 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 27 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 35m 49s | | trunk passed |
| +1 :green_heart: | compile | 1m 40s | | trunk passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | compile | 1m 30s | | trunk passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | checkstyle | 1m 13s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 38s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 7s | | trunk passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | javadoc | 1m 38s | | trunk passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | spotbugs | 3m 44s | | trunk passed |
| +1 :green_heart: | shadedclient | 21m 21s | | branch has no errors when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 21s | | the patch passed |
| +1 :green_heart: | compile | 1m 23s | | the patch passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | cc | 1m 23s | | the patch passed |
| +1 :green_heart: | javac | 1m 23s | | the patch passed |
| +1 :green_heart: | compile | 1m 13s | | the patch passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | cc | 1m 13s | | the patch passed |
| +1 :green_heart: | javac | 1m 13s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks issues. |
| -0 :warning: | checkstyle | 0m 56s | [/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/3/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt) | hadoop-hdfs-project/hadoop-hdfs: The patch generated 13 new + 869 unchanged - 5 fixed = 882 total (was 874) |
| +1 :green_heart: | mvnsite | 1m 20s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 56s | | the patch passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 |
| +1 :green_heart: | javadoc | 1m 25s | | the patch passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| +1 :green_heart: | spotbugs | 3m 43s | | the patch passed |
| +1 :green_heart: | shadedclient | 20m 52s | | patch has no errors when building and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 380m 24s | [/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/3/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt) | hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 46s | | The patch does not generate ASF License warnings. |
| | | 482m 8s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.hdfs.server.namenode.ha.TestEditLogTailer |
| | hadoop.hdfs.server.namenode.TestDecommissioningStatusWithBackoffMonitor |
| | hadoop.hdfs.server.namenode.TestDecommissioningStatus |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/3/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/3288 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell cc buflint bufcompat jshint |
| uname | Linux 2bb7c9938eab 4.15.0-143-generic #147-Ubuntu SMP Wed Apr 14 16:10:11 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / f50fd260bccab1184abeb5fd6824442fcae8c887 |
| Default Java | Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/3/testReport/ |
| Max. process+thread count | 2028 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3288/3/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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[GitHub] [hadoop] tomscut commented on pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
tomscut commented on pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288#issuecomment-909761516
Hi @jojochuang , this PR has a lot of changes, which can make rolling updates difficult. I re-implemented this feature and will submit another PR later. Thank you for your review.
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[GitHub] [hadoop] tomscut closed pull request #3288: HDFS-16158. Discover datanodes with unbalanced volume usage by the st…
Posted by GitBox <gi...@apache.org>.
tomscut closed pull request #3288:
URL: https://github.com/apache/hadoop/pull/3288
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