[ https://issues.apache.org/jira/browse/HDFS-11293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15803261#comment-15803261 ]
Yuanbo Liu commented on HDFS-11293: ----------------------------------- [~umamaheswararao] Thanks for your response. I'll attach a test case for this issue. > FsDatasetImpl throws ReplicaAlreadyExistsException in a wrong situation > ----------------------------------------------------------------------- > > Key: HDFS-11293 > URL: https://issues.apache.org/jira/browse/HDFS-11293 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Yuanbo Liu > Assignee: Yuanbo Liu > Priority: Critical > > In {{FsDatasetImpl#createTemporary}}, we use {{volumeMap}} to get replica > info by block pool id. But in this situation: > {code} > datanode A => {DISK, SSD}, datanode B => {DISK, ARCHIVE}. > 1. the same block replica exists in A[DISK] and B[DISK]. > 2. the block pool id of datanode A and datanode B are the same. > {code} > Then we start to change the file's storage policy and move the block replica > in the cluster. Very likely we have to move block from B[DISK] to A[SSD], at > this time, datanode A throws ReplicaAlreadyExistsException and it's not a > correct behavior. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org