[ https://issues.apache.org/jira/browse/HDFS-12423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Weiwei Yang updated HDFS-12423: ------------------------------- Resolution: Fixed Hadoop Flags: Reviewed Fix Version/s: HDFS-7240 Status: Resolved (was: Patch Available) I just committed this to the feature branch, thanks for the contribution [~linyiqun]. > Ozone: TopN container choosing policy should ignore containers that has no > pending deletion blocks > -------------------------------------------------------------------------------------------------- > > Key: HDFS-12423 > URL: https://issues.apache.org/jira/browse/HDFS-12423 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: ozone > Affects Versions: HDFS-7240 > Reporter: Yiqun Lin > Assignee: Yiqun Lin > Labels: ozoneMerge > Fix For: HDFS-7240 > > Attachments: HDFS-12423-HDFS-7240.001.patch, > HDFS-12423-HDFS-7240.002.patch > > > TopN container choosing policy should ignore unnecessary containers. > Currently TopN policy selects specified count of containers but not check the > number of pending deletion blocks. So there is a chance there will be some > unnecessary containers being chosen. That is say we will choose some > containers that don't include any pending deletion blocks. The related output: > {noformat} > 17/09/11 02:58:30 INFO impl.TopNOrderedContainerDeletionChoosingPolicy: > Select container c7a85e6e-3528-45d1-8063-cd7fec114545 for block deletion, > pending deletion blocks num: 1. > 17/09/11 02:58:30 INFO impl.TopNOrderedContainerDeletionChoosingPolicy: > Select container 1d163265-8d47-4ed3-845f-f7d3eb569b83 for block deletion, > pending deletion blocks num: 0. > 17/09/11 02:58:30 INFO impl.TopNOrderedContainerDeletionChoosingPolicy: > Select container 21017018-be32-44e6-9f62-e7fc9f6a6021 for block deletion, > pending deletion blocks num: 0. > 17/09/11 02:58:30 INFO impl.TopNOrderedContainerDeletionChoosingPolicy: > Select container 4cccadc8-ef5e-466d-bd9e-5b9705f8748c for block deletion, > pending deletion blocks num: 0. > 17/09/11 02:58:30 INFO impl.TopNOrderedContainerDeletionChoosingPolicy: > Select container 55b11be9-f16f-4620-a310-07c9be3bbfee for block deletion, > pending deletion blocks num: 0. > {noformat} > We should ignore these containers which pending deletion blocks num is 0, > this can reduce some unnecessary block-deletion iterations. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org