HDFS-17642. Add target node list, exclude source node list, and exclude target node list parameters to balancer #7127
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…y moves blocks to those nodes
Jtdellaringa
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aQuigs
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Oct 23, 2024
...-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
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…, clarified when processing excluded source/target lists
aQuigs
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Oct 23, 2024
...-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
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…ludeSource or target & excludeTarget options
aQuigs
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Oct 23, 2024
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@aQuigs This PR includes functionality - the change in private long init(List reports) method is where we filter out the allowed/excluded nodes from being targets or or sources |
Ah, got it, I overlooked that piece. LGTM - thanks |
ctrezzo
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Oct 30, 2024
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Thank you for the work! I left a comment about adding test coverage.
Also please fix the checkstyle issues that this patch adds: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7127/5/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
...s-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
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Thanks @Jtdellaringa and @ctrezzo @aQuigs . Make sense to me. Please rebase the source code and fix the checkstyle first. |
ctrezzo
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Nov 4, 2024
| BalancerParameters.DEFAULT.getIncludedNodes()), false, | ||
| false, p); | ||
| } catch (Exception e) { | ||
| if (!e.getMessage().contains(String.valueOf(ExitStatus.NO_MOVE_BLOCK.getExitCode()))) { |
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Right now the unit tests pass in the cases where:
- no exception is thrown
- an exception with NO_MOVE_BLOCK exit code in the message
Are the above two cases intended behavior?
If 2 is the only expected pass case, then we should either annotate the test with the expected failure or use the junit assertThrows (I forget which version this assert is available in).
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I have updated the tests accordingly, thank you for catching this.
ctrezzo
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Nov 4, 2024
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Thanks @Jtdellaringa for the work! It looks good to me. I will wait for yetus to do a full run to see of all issues are resolved and then commit if it looks good.
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Committed! Thanks for the work @Jtdellaringa ! |
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Nov 7, 2024
…de target node list parameters to balancer (apache#7127) HDFS-17642. Add target node list, exclude source node list, and exclude target node list parameters to balancer (apache#7127) --------- Co-authored-by: Joseph DellAringa <[email protected]>
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…de target node list parameters to balancer (apache#7127) HDFS-17642. Add target node list, exclude source node list, and exclude target node list parameters to balancer (apache#7127) --------- Co-authored-by: Joseph DellAringa <[email protected]>
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…de target node list parameters to balancer (apache#7127) HDFS-17642. Add target node list, exclude source node list, and exclude target node list parameters to balancer (apache#7127) --------- Co-authored-by: Joseph DellAringa <[email protected]>
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Nov 14, 2024
…de target node list parameters to balancer (apache#7127) HDFS-17642. Add target node list, exclude source node list, and exclude target node list parameters to balancer (apache#7127) --------- Co-authored-by: Joseph DellAringa <[email protected]>
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Description of PR
Adds target parameter to balancer which will allow only datanodes in the provided list of hosts to be picked as a target node.
Adds excludeSource and excludeTarget parameters to balancer which will exclude specified hosts from being picked as a source or target node.
How was this patch tested?
mvn install -DskipTests
add unit test for parameter check in balancer
For code changes:
LICENSE,LICENSE-binary,NOTICE-binaryfiles?