[ https://issues.apache.org/jira/browse/HDFS-528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo (Nicholas), SZE updated HDFS-528: ---------------------------------------- Attachment: h528_20120731_b-1.patch h528_20120731_b-1.patch: for branch-1. > Add ability for safemode to wait for a minimum number of live datanodes > ----------------------------------------------------------------------- > > Key: HDFS-528 > URL: https://issues.apache.org/jira/browse/HDFS-528 > Project: Hadoop HDFS > Issue Type: New Feature > Components: scripts > Affects Versions: 0.22.0 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Fix For: 0.22.0 > > Attachments: h528_20120731_b-1.patch, hdfs-528-v2.txt, > hdfs-528-v3.txt, hdfs-528-v4.txt, hdfs-528.txt, hdfs-528.txt > > > When starting up a fresh cluster programatically, users often want to wait > until DFS is "writable" before continuing in a script. "dfsadmin -safemode > wait" doesn't quite work for this on a completely fresh cluster, since when > there are 0 blocks on the system, 100% of them are accounted for before any > DNs have reported. > This JIRA is to add a command which waits until a certain number of DNs have > reported as alive to the NN. -- 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