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Hadoop QA commented on HADOOP-13144: ------------------------------------ | (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 8s{color} | {color:red} HADOOP-13144 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} | \\ \\ || Subsystem || Report/Notes || | JIRA Issue | HADOOP-13144 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12965529/HADOOP-13144-performance.patch | | Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/16685/console | | Powered by | Apache Yetus 0.8.0 http://yetus.apache.org | This message was automatically generated. > Enhancing IPC client throughput via multiple connections per user > ----------------------------------------------------------------- > > Key: HADOOP-13144 > URL: https://issues.apache.org/jira/browse/HADOOP-13144 > Project: Hadoop Common > Issue Type: Improvement > Components: ipc > Reporter: Jason Kace > Assignee: Íñigo Goiri > Priority: Minor > Attachments: HADOOP-13144-performance.patch, HADOOP-13144.000.patch, > HADOOP-13144.001.patch, HADOOP-13144.002.patch, HADOOP-13144.003.patch > > > The generic IPC client ({{org.apache.hadoop.ipc.Client}}) utilizes a single > connection thread for each {{ConnectionId}}. The {{ConnectionId}} is unique > to the connection's remote address, ticket and protocol. Each ConnectionId > is 1:1 mapped to a connection thread by the client via a map cache. > The result is to serialize all IPC read/write activity through a single > thread for a each user/ticket + address. If a single user makes repeated > calls (1k-100k/sec) to the same destination, the IPC client becomes a > bottleneck. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org