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Solution caused by:java.io.ioexception:java.io.ioexception:error=12, cannot allocate memory

Source: Internet
Author: User
Tags cassandra
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Recently the company an online server HBase Regionserver hung up after the error oom.

  1. This machine is equipped with Cassandra at the same time, so stop Cassandra release memory, restart Regionserver failure, and Cassandra try to start also error caused by:java.io.IOException: JAVA.IO.IOEXCEPTION:ERROR=12, cannot allocate memory
  2. Ps-ef found a lot of processes like/bin/bash/opt/cloudera-manager/cm-5.3.0/lib64/cmf/service/hbase/hbase.sh regionserver start running, After all, they still can't start Regionserver and Cassandra.
  3. Restarting the machine is still invalid
  4. Reference https://stackoverflow.com/questions/1124771/ After How-to-solve-java-io-ioexception-error-12-cannot-allocate-memory-calling-run, use echo 0 >/proc/sys/vm/ Overcommit_memory Problem Solving
Follow-up still need to strengthen the learning of memory management

Solution caused by:java.io.ioexception:java.io.ioexception:error=12, cannot allocate memory

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