Jarvis

To help you out with small things.

Tuesday, 10 December 2013

Region servers going down in cdh4 due to mapreduce job

I faced this problem because i had set the scan caching to 500 ie it passes 500 rows to your mapreduce job which is memory intensive and not recommended
Posted by Jijo at 21:31
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      • org.springframework.batch.core.repository.JobInsta...
      • Sort mapreduce output keys in descending order
      • Set separator for mapreduce output
      • Region servers going down in cdh4 due to mapreduce...
      • data driven db input format
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