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Jing Zhao updated HDFS-7340: ---------------------------- Attachment: HDFS-7340.001.patch Thanks Suresh and Nicholas for the review. Update the patch to address Suresh's comments. bq. add Idempotent annotation to the method The ClientProtocol#rollingUpgrade has already been annotated as idempotent before the fix. > make rollingUpgrade start/finalize idempotent > --------------------------------------------- > > Key: HDFS-7340 > URL: https://issues.apache.org/jira/browse/HDFS-7340 > Project: Hadoop HDFS > Issue Type: Bug > Components: ha > Affects Versions: 2.4.0 > Reporter: Arpit Gupta > Assignee: Jing Zhao > Attachments: HDFS-7340.000.patch, HDFS-7340.001.patch > > > I was running this on a HA cluster with > dfs.client.test.drop.namenode.response.number set to 1. So the first request > goes through but the response is dropped. Which then causes another request > which fails and says a request is already in progress. We should add retry > cache support for this. -- This message was sent by Atlassian JIRA (v6.3.4#6332)