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Posted to issues@kudu.apache.org by "Jean-Daniel Cryans (JIRA)" <ji...@apache.org> on 2016/07/11 21:41:11 UTC

[jira] [Created] (KUDU-1524) Flushing large compressed values can cause a crash

Jean-Daniel Cryans created KUDU-1524:
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             Summary: Flushing large compressed values can cause a crash
                 Key: KUDU-1524
                 URL: https://issues.apache.org/jira/browse/KUDU-1524
             Project: Kudu
          Issue Type: Bug
          Components: cfile
            Reporter: Jean-Daniel Cryans
            Priority: Critical


It's possible right now to insert values that cannot be flushed. If a column is configured to be compressed, the block compressor will limit blocks to 16MB so if a large value isn't compressible, it won't be flushable. It will show up like this in the log:

{noformat}
Invalid argument: Flush to disk failed: estimated max size 29545252 is greater than the expected 16777216
{noformat}

Once this happens it's impossible to bring the server back since it will bootstrap the tablet, try flushing again, and crash.



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