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James Clampffer updated HDFS-11294: ----------------------------------- Attachment: HDFS-11294.HDFS-8707.001.patch New patch with test, should be ready for review. > libhdfs++: Segfault in HA failover if DNS lookup for both Namenodes fails > ------------------------------------------------------------------------- > > Key: HDFS-11294 > URL: https://issues.apache.org/jira/browse/HDFS-11294 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: hdfs-client > Reporter: James Clampffer > Assignee: James Clampffer > Attachments: HDFS-11294.HDFS-8707.001.patch, > HDFS-8707.HDFS-11294.000.patch > > > Hit while doing more manual testing on HDFS-11028. > The HANamenodeTracker takes an asio endpoint to figure out what endpoint on > the other node to try next during a failover. This is done by passing the > element at index 0 from endpoints (a std::vector<asio endpoint>). > When DNS fails the endpoints vector for that node will be empty so the > iterator returned by endpoints\[0\] is just a null pointer that gets > dereferenced and causes a segfault. -- 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