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Hadoop QA commented on HADOOP-12421: ------------------------------------ | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s {color} | {color:blue} Docker mode activated. {color} | | {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 3s {color} | {color:red} HADOOP-12421 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} | \\ \\ || Subsystem || Report/Notes || | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12777648/HADOOP-12421-v5.patch | | JIRA Issue | HADOOP-12421 | | Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/9021/console | | Powered by | Apache Yetus 0.2.0 http://yetus.apache.org | This message was automatically generated. > Add jitter to RetryInvocationHandler > ------------------------------------ > > Key: HADOOP-12421 > URL: https://issues.apache.org/jira/browse/HADOOP-12421 > Project: Hadoop Common > Issue Type: Bug > Affects Versions: 2.8.0 > Reporter: Elliott Clark > Assignee: Elliott Clark > Attachments: HADOOP-12421-v1.patch, HADOOP-12421-v2.patch, > HADOOP-12421-v3.patch, HADOOP-12421-v4.patch, HADOOP-12421-v5.patch > > > Calls to NN can become synchronized across a cluster during NN failover. This > leads to a spike in requests until things recover. Making an already tricky > time worse. -- This message was sent by Atlassian JIRA (v6.3.4#6332)