Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
Hadoop >> mail # user >> Jobtracker still finding old task nodes


Copy link to this message
-
Jobtracker still finding old task nodes
Hello,
After formatting the HDFS and removing several entries from the slaves
file, when I start up
$HADOOP/bin/start-all.sh (hadoop 0.20)
I get this in jobtracker.log
All the machines save acrux have been removed the from the slaves file.
Both acrux and the jobtracker have the same conf files.

Why does it discover the old machines? Does it automatically discover
new machines?

Thanks and Regards
Saptarshi

WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot find
record of 'previous' heartbeat for 'tracker_deneb.'; reinitializing
the tasktracker
WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot find
record of 'previous' heartbeat for
'tracker_adhara.stat.purdue.edu:localhost.localdomain/127.0.0.1:37715';
reinitializing the tasktracker
WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot find
record of 'previous' heartbeat for 'tracker_castor'; reinitializing
the
tasktracker
2009-08-16 02:15:03,146 INFO org.apache.hadoop.net.NetworkTopology:
Adding a new node: /default-rack/deneb.
2009-08-16 02:15:03,161 INFO org.apache.hadoop.net.NetworkTopology:
Adding a new node: /default-rack/adhara
2009-08-16 02:15:03,165 INFO org.apache.hadoop.net.NetworkTopology:
Adding a new node: /default-rack/castor
2009-08-16 02:15:03,193 INFO org.apache.hadoop.net.NetworkTopology:
Adding a new node: /default-rack/acrux.
2009-08-16 02:15:15,158 ERROR org.apache.hadoop.mapred.PoolManager:
Failed to reload allocations file - will use existing allocation
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB