[ https://issues.apache.org/jira/browse/HDFS-16099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shuyan Zhang updated HDFS-16099: -------------------------------- Description: BPOfferService#bpServiceToActive is not volatile, which may cause _CommandProcessingThread_ to get the out-of-date active namenode. When a failover occurs, the old ANN's _CommandProcessingThread_ may read the outdated BPOfferService#bpServiceToActive and execute the NN's command. At this time, if the new ANN's _CommandProcessingThread_ reads the new value of bpServiceToActive, split brain will occur; otherwise, the new ANN's commands cannot be executed normally, which is also unacceptable. was:BPOfferService#bpServiceToActive is not volatile, which may cause _commandProcessingThread_ to get an out-of-date active namenode. > Make bpServiceToActive to be volatile > ------------------------------------- > > Key: HDFS-16099 > URL: https://issues.apache.org/jira/browse/HDFS-16099 > Project: Hadoop HDFS > Issue Type: Bug > Components: datanode > Reporter: Shuyan Zhang > Assignee: Shuyan Zhang > Priority: Major > Labels: pull-request-available > Time Spent: 10m > Remaining Estimate: 0h > > BPOfferService#bpServiceToActive is not volatile, which may cause > _CommandProcessingThread_ to get the out-of-date active namenode. > When a failover occurs, the old ANN's _CommandProcessingThread_ may read the > outdated BPOfferService#bpServiceToActive and execute the NN's command. At > this time, if the new ANN's _CommandProcessingThread_ reads the new value of > bpServiceToActive, split brain will occur; otherwise, the new ANN's commands > cannot be executed normally, which is also unacceptable. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org