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Registered: ‎04-06-2017

Insufficient number of network buffers: required 8, but only 0 available. current ntwrk buffers:2048

We have installed the Flink on Cloudera based cluster. After running the Flink batch program, we are getting the following issue.

 

Network Buffer issue caused by: java.io.IOException: Insufficient number of network buffers: required 8, but only 0 available. The total number of network buffers is currently set to 2048. You can increase this number by setting the configuration key 'taskmanager.network.numberOfBuffers'

 

Even, we changed the 'taskmanager.network.numberOfBuffers' and same value is  refelected for cluster but after running the program again we are getting the same  above issue.