Chao Sun created HDFS-14660: ------------------------------- Summary: [SBN Read] ObserverNameNode should throw StandbyException for requests not from ObserverProxyProvider Key: HDFS-14660 URL: https://issues.apache.org/jira/browse/HDFS-14660 Project: Hadoop HDFS Issue Type: Bug Reporter: Chao Sun Assignee: Chao Sun
In a HDFS HA cluster with consistent reads enabled (HDFS-12943), clients could be using either {{ObserverReadProxyProvider}}, {{ConfiguredProxyProvider}}, or something else. Since observer is just a special type of SBN and we allow transitions between them, a client NOT using {{ObserverReadProxyProvider}} will need to have {{dfs.ha.namenodes.<nameservice>}} include all NameNodes in the cluster, and therefore, it may send request to a observer node. For this case, we should check whether the {{stateId}} in the incoming RPC header is set or not, and throw an {{StandbyException}} when it is not. -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org