[ https://issues.apache.org/jira/browse/HDFS-3256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252788#comment-13252788 ]
Todd Lipcon commented on HDFS-3256: ----------------------------------- +1 > HDFS considers blocks under-replicated if topology script is configured with > only 1 rack > ---------------------------------------------------------------------------------------- > > Key: HDFS-3256 > URL: https://issues.apache.org/jira/browse/HDFS-3256 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.0.0 > Reporter: Aaron T. Myers > Assignee: Aaron T. Myers > Attachments: HDFS-3256.patch, HDFS-3256.patch, HDFS-3256.patch, > HDFS-3256.patch, HDFS-3256.patch, HDFS-3256.patch > > > HDFS treats the mere presence of a topology script being configured as > evidence that there are multiple racks. If there is in fact only a single > rack, the NN will try to place the blocks on at least two racks, and thus > blocks will be considered to be under-replicated. -- 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