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Shyam Gavulla commented on MAPREDUCE-4522: ------------------------------------------ on my local , I made the change and tested org.apache.hadoop.examples.DBCountPageView.java . The example ran fine and I didn't see the exception in verify() method. > DBOutputFormat Times out on large batch inserts > ----------------------------------------------- > > Key: MAPREDUCE-4522 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-4522 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: task-controller > Affects Versions: 0.20.205.0 > Reporter: Nathan Jarus > Labels: newbie > > In DBRecordWriter#close(), progress is never updated. In large batch inserts, > this can cause the reduce task to time out due to the amount of time it takes > the SQL engine to process that insert. > Potential solutions I can see: > Don't batch inserts; do the insert when DBRecordWriter#write() is called > (awful) > Spin up a thread in DBRecordWriter#close() and update progress in that. > (gross) > I can provide code for either if you're interested. -- This message was sent by Atlassian JIRA (v6.3.4#6332)