[jira] [Created] (CRAIL-35) Missing (understandable) error message if Crail runs out of free hugepages

["Michael Kaufmann (JIRA)" <ji...@apache.org>]

Michael Kaufmann created CRAIL-35:
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             Summary: Missing (understandable) error message if Crail runs out of free hugepages
                 Key: CRAIL-35
                 URL: https://issues.apache.org/jira/browse/CRAIL-35
             Project: Apache Crail
          Issue Type: Bug
            Reporter: Michael Kaufmann


Crail does not give useful error messages when it runs out of huge pages. I would appreciate something like "Not enough free hugepages. Please try to delete some files in /path/to/hugepages/dir" instead of the quite uninformative stack dump that it currently shows. If you don't have your own personal [~pepperjo] it can take quite some time to find out what's wrong and how to fix it.

{{18/05/17 17:14:35 INFO crail: datanode statistics, freeBlocks 19456}}
{{18/05/17 17:14:35 INFO crail: datanode statistics, freeBlocks 20480}}
{{18/05/17 17:14:36 INFO crail: datanode statistics, freeBlocks 21504}}
{{18/05/17 17:14:36 INFO crail: datanode statistics, freeBlocks 22528}}
{{Exception in thread "main" java.io.IOException: Map failed}}
{{       at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:940)}}
{{       at org.apache.crail.storage.rdma.RdmaStorageServer.allocateResource(RdmaStorageServer.java:114)}}
{{       at org.apache.crail.storage.StorageServer.main(StorageServer.java:152)}}
{{Caused by: java.lang.OutOfMemoryError: Map failed}}
{{       at sun.nio.ch.FileChannelImpl.map0(Native Method)}}
{{       at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:937)}}
{{       ... 2 more}}

 

This bug applies to git rev: 0db64fddad52044eab75ee73e1857c7bcf6fae7d (and earlier)

thanks,

Michael



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