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ASF GitHub Bot logged work on HDFS-16348: ----------------------------------------- Author: ASF GitHub Bot Created on: 22/Nov/21 14:50 Start Date: 22/Nov/21 14:50 Worklog Time Spent: 10m Work Description: symious opened a new pull request #3704: URL: https://github.com/apache/hadoop/pull/3704 <!-- Thanks for sending a pull request! 1. If this is your first time, please read our contributor guidelines: https://cwiki.apache.org/confluence/display/HADOOP/How+To+Contribute 2. Make sure your PR title starts with JIRA issue id, e.g., 'HADOOP-17799. Your PR title ...'. --> ### Description of PR In HDFS-16320, the DataNode can retrieve the SLOW status from each NameNode. This ticket is to send this information back to Clients who are writing blocks. If a Clients noticed the pipeline is build on a slownode, he/she can choose to mark the slownode as a badnode to exclude the node or rebuild a pipeline. In order to avoid the false positives, we added a config of "threshold", only clients continuously receives slownode reply from the same node will the node be marked as SLOW. Jira ticket: https://issues.apache.org/jira/browse/HDFS-16348 ### How was this patch tested? unit test ### For code changes: - [x] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')? - [ ] Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation? - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)? - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, `NOTICE-binary` files? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 684767) Remaining Estimate: 0h Time Spent: 10m > Mark slownode as badnode to recover pipeline > -------------------------------------------- > > Key: HDFS-16348 > URL: https://issues.apache.org/jira/browse/HDFS-16348 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Janus Chow > Assignee: Janus Chow > Priority: Major > Labels: pull-request-available > Time Spent: 10m > Remaining Estimate: 0h > > In HDFS-16320, the DataNode can retrieve the SLOW status from each NameNode. > This ticket is to send this information back to Clients who are writing > blocks. If a Clients noticed the pipeline is build on a slownode, he/she can > choose to mark the slownode as a badnode to exclude the node or rebuild a > pipeline. > In order to avoid the false positives, we added a config of "threshold", only > clients continuously receives slownode reply from the same node will the node > be marked as SLOW. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org