[ https://issues.apache.org/jira/browse/HDFS-17290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shilun Fan resolved HDFS-17290. ------------------------------- Hadoop Flags: Reviewed Resolution: Fixed > HDFS: add client rpc backoff metrics due to disconnection from lowest > priority queue > ------------------------------------------------------------------------------------ > > Key: HDFS-17290 > URL: https://issues.apache.org/jira/browse/HDFS-17290 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.10.0, 3.4.0 > Reporter: Lei Yang > Assignee: Lei Yang > Priority: Major > Labels: pull-request-available > Fix For: 3.4.0 > > > Clients are backoff when rpcs cannot be enqueued. However there are different > scenarios when backoff could happen. Currently there is no way to > differenciate whether a backoff happened due to lowest prio+disconnection or > queue overflow from higher priority queues when connection between client and > namenode remains open. Currently IPC server just emits a single metrics for > all the backoffs. > Example: > # Client are directly enqueued into lowest priority queue and backoff when > lowest queue is full. Client are expected to disconnect from namenode. > # Client are enqueued into non-lowest priority queue and overflowed all the > way down to lowest priority queue and back off. In this case, connection > between client and namenode remains open. > We would like to add metrics for #1 -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org