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Chen Liang edited comment on HDFS-14435 at 4/22/19 7:38 PM: ------------------------------------------------------------ [~xkrogen] sorry for the late response... +1 from me. Feel free to commit this yourself. :) was (Author: vagarychen): [~xkrogen] sorry for the late response... +1 from me. Feel free to commit yourself. :) > ObserverReadProxyProvider is unable to properly fetch HAState from Standby NNs > ------------------------------------------------------------------------------ > > Key: HDFS-14435 > URL: https://issues.apache.org/jira/browse/HDFS-14435 > Project: Hadoop HDFS > Issue Type: Bug > Components: ha, nn > Affects Versions: 3.3.0 > Reporter: Erik Krogen > Assignee: Erik Krogen > Priority: Major > Attachments: HDFS-14435.000.patch, HDFS-14435.001.patch, > HDFS-14435.002.patch, HDFS-14435.003.patch, HDFS-14435.004.patch, > HDFS-14435.005.patch, dt_stack_trace.png > > > We have been seeing issues during testing of the Consistent Read from Standby > feature that indicate that ORPP is unable to call {{getHAServiceState}} on > Standby NNs, as they are rejected with a {{StandbyException}}. Upon further > investigation, we realized that although the Standby allows the > {{getHAServiceState()}} call, reading a delegation token is not allowed in > Standby state, thus the call will fail when using DT-based authentication. > This hasn't caused issues in practice, since ORPP assumes that the state is > Standby if it is unable to fetch the state, but we should fix the logic to > properly handle this scenario. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org