Hi What happens when the node rejoins then ?
- The replication level of several blocks increases ? - The old replicas are removed in favor of new replicas ? (Or the new ones) regards Piotr 2009/4/27 Stas Oskin <[email protected]> > Thanks. > > 2009/4/27 Koji Noguchi <[email protected]> > > > http://hadoop.apache.org/core/docs/current/hdfs_design.html#Data+Disk+Fa > > ilure%2C+Heartbeats+and+Re-Replication< > http://hadoop.apache.org/core/docs/current/hdfs_design.html#Data+Disk+Fa%0Ailure%2C+Heartbeats+and+Re-Replication > > > > > > hope this helps. > > > > Koji > > > > -----Original Message----- > > From: Stas Oskin [mailto:[email protected]] > > Sent: Monday, April 27, 2009 4:11 AM > > To: [email protected] > > Subject: Blocks replication in downtime even > > > > Hi. > > > > I have a question: > > > > If I have N of DataNodes, and one or several of the nodes have become > > unavailable, would HDFS re-synchronize the blocks automatically, > > according > > to replication level set? > > And if yes, when? As soon as the offline node was detected, or only on > > file > > access? > > > > Regards. > > >
