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Xiaoyu Yao commented on HDFS-12016: ----------------------------------- [~cheersyang]: Yes, this is the same root cause. However, my original comments on HDFS-11844 is incorrect. The in-memory map that is not loaded correctly is ContainerManagerImpl#containerMap. In the case below, we are trying to load containers (by *.container) on the datanode from here {{/home/wwei/hadoop-data/scm/}}, which creates an empty containerMap. The correct path should be {{/home/wwei/hadoop-data/scm/repository}}. Adding the "repository" to the path fix the reloading problem in real cluster but there are some test failures with MiniOzoneCluster that I'm looking at. {code} /home/wwei/hadoop-data/scm/repository/20170522c1.container {code} > Ozone: SCM: Container metadata are not loaded properly after datanode restart > ----------------------------------------------------------------------------- > > Key: HDFS-12016 > URL: https://issues.apache.org/jira/browse/HDFS-12016 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: ozone, scm > Affects Versions: HDFS-7240 > Reporter: Nandakumar > Assignee: Xiaoyu Yao > > Repro steps (Credit to [~nandakumar131]) > 1. create volume/bucket/key > 2. putkey > 3. restart DN > 4. getkey will hit error on container not found like below. > {code} > 2017-06-22 15:28:29,950 [Thread-48] INFO (OzoneExceptionMapper.java:39) > vol-2/bucket-1/key-1 xyao 8727acc4-c1e9-4ba3-a819-4c0e16957079 - Returning > exception. ex: > {"httpCode":500,"shortMessage":"internalServerError","resource":"xyao","message":"org.apache.hadoop.scm.container.common.helpers.StorageContainerException: > Unable to find the container. Name: > 48cb0c3d-0537-4cff-b716-a7f69ebf50bc","requestID":"8 > {code} > The root cause is OzoneContainer#OzoneContainer does not load containers from > repository properly when ozone.container.metadata.dirs are specified. > The fix is to append the CONTAINER_ROOT_PREFIX when looking for containers on > the datanode. -- 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