HDFS-17534 RBF: Support leader follower mode for multiple subclusters
Currently there are five modes in multiple subclusters like HASH, LOCAL, RANDOM, HASH_ALL,SPACE;
Proposal a new mode called leader/follower mode. routers try to write to leader subcluster as many as possible. When routers read data, put leader subcluster into first rank.
@goiri Sorry to interrupt, please take a look if convenient, thank you.
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@yuanboliu Thanks for the contribution! I believe all subclusters should be equivalent. Why should we let a particular subcluster bear more read/write load?
This is based on my personal experience, so it may not be entirely accurate. We opted for RBF because a particular NN had an excessive load, leading us to need to split the namespace. The concept proposed in this PR feels somewhat different from our previous intuition.
@slfan1989 Thanks for your reply. The major idea is that follower sub-clusters are considerred as backup clusters, we don't use them until leader subcluster not working at all. hdfs has HA state and replications and ensure disaster tolerance within cluster. We're using this mode to make cross-cluster disaster tolerance work, so clients don't have to wait until the major cluster recovering, which takes long time. So basically this mode is not about using RBF to share overloading, but implement some kind of crosss-cluster disaster tolerance.
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| _ Patch Compile Tests _ | ||||
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| +1 :green_heart: | compile | 0m 20s | the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | cc | 0m 20s | the patch passed | |
| +1 :green_heart: | javac | 0m 20s | the patch passed | |
| +1 :green_heart: | compile | 0m 18s | the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | cc | 0m 18s | the patch passed | |
| +1 :green_heart: | javac | 0m 18s | the patch passed | |
| -1 :x: | blanks | 0m 0s | /blanks-eol.txt | The patch has 1 line(s) that end in blanks. Use git apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply |
| -0 :warning: | checkstyle | 0m 10s | /results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt | hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 2 new + 1 unchanged - 0 fixed = 3 total (was 1) |
| +1 :green_heart: | mvnsite | 0m 21s | the patch passed | |
| +1 :green_heart: | javadoc | 0m 19s | the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | javadoc | 0m 17s | the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | spotbugs | 0m 51s | the patch passed | |
| +1 :green_heart: | shadedclient | 19m 54s | patch has no errors when building and testing our client artifacts. | |
| _ Other Tests _ | ||||
| -1 :x: | unit | 26m 49s | /patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt | hadoop-hdfs-rbf in the patch passed. |
| +1 :green_heart: | asflicense | 0m 27s | The patch does not generate ASF License warnings. | |
| 113m 12s |
| Reason | Tests |
|---|---|
| Failed junit tests | hadoop.hdfs.server.federation.router.TestRouterClientRejectOverload |
| Subsystem | Report/Notes |
|---|---|
| Docker | ClientAPI=1.45 ServerAPI=1.45 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/5/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/6861 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets cc buflint bufcompat markdownlint |
| uname | Linux ce39752bebbe 5.15.0-106-generic #116-Ubuntu SMP Wed Apr 17 09:17:56 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / d6a6eb992aad1117ba3d5f4c5f07a4721a88c3be |
| Default Java | Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 |
| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/5/testReport/ |
| Max. process+thread count | 4044 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-rbf U: hadoop-hdfs-project/hadoop-hdfs-rbf |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/5/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
:broken_heart: -1 overall
| Vote | Subsystem | Runtime | Logfile | Comment |
|---|---|---|---|---|
| +0 :ok: | reexec | 0m 29s | 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: | detsecrets | 0m 0s | detect-secrets was not available. | |
| +0 :ok: | buf | 0m 0s | buf was not available. | |
| +0 :ok: | buf | 0m 0s | buf was not available. | |
| +0 :ok: | markdownlint | 0m 0s | markdownlint 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 3 new or modified test files. | |
| _ trunk Compile Tests _ | ||||
| +1 :green_heart: | mvninstall | 33m 45s | trunk passed | |
| +1 :green_heart: | compile | 0m 22s | trunk passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | compile | 0m 21s | trunk passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | checkstyle | 0m 18s | trunk passed | |
| +1 :green_heart: | mvnsite | 0m 24s | trunk passed | |
| +1 :green_heart: | javadoc | 0m 36s | trunk passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | javadoc | 0m 47s | trunk passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | spotbugs | 0m 55s | trunk passed | |
| +1 :green_heart: | shadedclient | 24m 46s | branch has no errors when building and testing our client artifacts. | |
| _ Patch Compile Tests _ | ||||
| +1 :green_heart: | mvninstall | 0m 20s | the patch passed | |
| +1 :green_heart: | compile | 0m 21s | the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | cc | 0m 21s | the patch passed | |
| +1 :green_heart: | javac | 0m 21s | the patch passed | |
| +1 :green_heart: | compile | 0m 18s | the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | cc | 0m 18s | the patch passed | |
| +1 :green_heart: | javac | 0m 18s | the patch passed | |
| +1 :green_heart: | blanks | 0m 0s | The patch has no blanks issues. | |
| -0 :warning: | checkstyle | 0m 10s | /results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt | hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 2 new + 1 unchanged - 0 fixed = 3 total (was 1) |
| +1 :green_heart: | mvnsite | 0m 17s | the patch passed | |
| +1 :green_heart: | javadoc | 0m 16s | the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | javadoc | 0m 14s | the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | spotbugs | 0m 51s | the patch passed | |
| +1 :green_heart: | shadedclient | 22m 3s | patch has no errors when building and testing our client artifacts. | |
| _ Other Tests _ | ||||
| -1 :x: | unit | 25m 43s | /patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt | hadoop-hdfs-rbf in the patch passed. |
| +1 :green_heart: | asflicense | 0m 22s | The patch does not generate ASF License warnings. | |
| 114m 37s |
| Reason | Tests |
|---|---|
| Failed junit tests | hadoop.hdfs.server.federation.router.TestRouterRpcMultiDestination |
| Subsystem | Report/Notes |
|---|---|
| Docker | ClientAPI=1.45 ServerAPI=1.45 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/6861 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets cc buflint bufcompat markdownlint |
| uname | Linux 7bd37b843032 5.15.0-106-generic #116-Ubuntu SMP Wed Apr 17 09:17:56 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 3c6e813429165f9974604acbed407ff818735dee |
| Default Java | Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 |
| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/testReport/ |
| Max. process+thread count | 4247 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-rbf U: hadoop-hdfs-project/hadoop-hdfs-rbf |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
failure test is not related.
@ZanderXu Sure, thanks for your reply. The test failure is not related.
:confetti_ball: +1 overall
| Vote | Subsystem | Runtime | Logfile | Comment |
|---|---|---|---|---|
| +0 :ok: | reexec | 0m 51s | Docker mode activated. | |
| _ Prechecks _ | ||||
| +1 :green_heart: | dupname | 0m 0s | No case conflicting files found. | |
| +0 :ok: | codespell | 0m 0s | codespell was not available. | |
| +0 :ok: | detsecrets | 0m 0s | detect-secrets was not available. | |
| +0 :ok: | buf | 0m 0s | buf was not available. | |
| +0 :ok: | buf | 0m 0s | buf was not available. | |
| +0 :ok: | markdownlint | 0m 0s | markdownlint 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 3 new or modified test files. | |
| _ trunk Compile Tests _ | ||||
| +1 :green_heart: | mvninstall | 51m 33s | trunk passed | |
| +1 :green_heart: | compile | 0m 41s | trunk passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | compile | 0m 38s | trunk passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | checkstyle | 0m 31s | trunk passed | |
| +1 :green_heart: | mvnsite | 0m 42s | trunk passed | |
| +1 :green_heart: | javadoc | 0m 43s | trunk passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | javadoc | 0m 32s | trunk passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | spotbugs | 1m 24s | trunk passed | |
| +1 :green_heart: | shadedclient | 39m 22s | branch has no errors when building and testing our client artifacts. | |
| _ Patch Compile Tests _ | ||||
| +1 :green_heart: | mvninstall | 0m 32s | the patch passed | |
| +1 :green_heart: | compile | 0m 34s | the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | cc | 0m 34s | the patch passed | |
| +1 :green_heart: | javac | 0m 34s | the patch passed | |
| +1 :green_heart: | compile | 0m 29s | the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | cc | 0m 29s | the patch passed | |
| +1 :green_heart: | javac | 0m 29s | the patch passed | |
| +1 :green_heart: | blanks | 0m 0s | The patch has no blanks issues. | |
| +1 :green_heart: | checkstyle | 0m 19s | the patch passed | |
| +1 :green_heart: | mvnsite | 0m 32s | the patch passed | |
| +1 :green_heart: | javadoc | 0m 29s | the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 | |
| +1 :green_heart: | javadoc | 0m 23s | the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 | |
| +1 :green_heart: | spotbugs | 1m 22s | the patch passed | |
| +1 :green_heart: | shadedclient | 40m 14s | patch has no errors when building and testing our client artifacts. | |
| _ Other Tests _ | ||||
| +1 :green_heart: | unit | 32m 3s | hadoop-hdfs-rbf in the patch passed. | |
| +1 :green_heart: | asflicense | 0m 39s | The patch does not generate ASF License warnings. | |
| 176m 28s |
| Subsystem | Report/Notes |
|---|---|
| Docker | ClientAPI=1.45 ServerAPI=1.45 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/7/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/6861 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets cc buflint bufcompat markdownlint |
| uname | Linux 376ca57e8371 5.15.0-106-generic #116-Ubuntu SMP Wed Apr 17 09:17:56 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 635491d4747987255bf5c63fca36970c5bbfff5d |
| Default Java | Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08 |
| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/7/testReport/ |
| Max. process+thread count | 3485 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-rbf U: hadoop-hdfs-project/hadoop-hdfs-rbf |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/7/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
@goiri @slfan1989 @ZanderXu Sorry to interrupt, please take a look if convenient, thanks