Synchronization issues around state transition ----------------------------------------------
Key: HDFS-2693 URL: https://issues.apache.org/jira/browse/HDFS-2693 Project: Hadoop HDFS Issue Type: Sub-task Components: ha, name-node Affects Versions: HA branch (HDFS-1623) Reporter: Todd Lipcon Priority: Critical Currently when the NN changes state, it does so without synchronization. In particular, the state transition function does: (1) leave old state (2) change state variable (3) enter new state This means that the NN is marked as "active" before it has actually transitioned to active mode and opened its edit logs. This gives a window where write transactions can come in and the {{checkOperation}} allows them, but then they fail because the edit log is not yet opened. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira