[ https://issues.apache.org/jira/browse/MAPREDUCE-161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Allen Wittenauer resolved MAPREDUCE-161. ---------------------------------------- Resolution: Incomplete Closing this as stale. > Tasks are not scheduled even though task trackers have extra slots > ------------------------------------------------------------------ > > Key: MAPREDUCE-161 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-161 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: Runping Qi > > I ran a job with 51 reduce tasks on a cluster with 13 task trackers running > Hadoop 0.19. Each task tracker has 5 reduce slots. > Initially, each task tracker accepted 4 reduce tasks as expected. However, 3 > task trackers were put into blacklist because many tasks failed on them. > However, those failed tasks stayed in pending state, not being scheduled to > other task trackers, even though each of the other healthy tracker has one > free slot. -- This message was sent by Atlassian JIRA (v6.2#6252)