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Xiaoyu Yao commented on HDFS-12256: ----------------------------------- Patch looks good to me. +1. I will commit it shortly. > Ozone : handle inactive containers on DataNode > ---------------------------------------------- > > Key: HDFS-12256 > URL: https://issues.apache.org/jira/browse/HDFS-12256 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Chen Liang > Assignee: Chen Liang > Labels: ozoneMerge, tocheck > Attachments: HDFS-12256-HDFS-7240.001.patch > > > When a container gets created, corresponding metadata gets added to > {{ContainerManagerImpl#containerMap}}. What {{containerMap}} stores is a > containerName to {{ContainerStatus}} instance map. When datanode starts, it > also loads this map from disk file metadata. As long as the containerName is > found in this map, it is considered an existing container. > An issue we saw was that, occasionally, when the container creation on > datanode fails, the metadata of the failed container may still get added to > {{containerMap}}, with active flag set to false. But currently such > containers are not being handled, containers with active=false are just > treated as normal containers. Then when someone tries to write to this > container, fails can happen. -- 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