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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4304) Make FSEditLogOp.MAX_OP_SIZE configurable
Date Tue, 11 Dec 2012 20:59:21 GMT
Todd Lipcon created HDFS-4304:
---------------------------------

             Summary: Make FSEditLogOp.MAX_OP_SIZE configurable
                 Key: HDFS-4304
                 URL: https://issues.apache.org/jira/browse/HDFS-4304
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: namenode
    Affects Versions: 3.0.0, 2.0.3-alpha
            Reporter: Todd Lipcon
            Assignee: Colin Patrick McCabe


Today we ran into an issue where a NN had logged a very large op, greater than the 1.5MB MAX_OP_SIZE
constant. In order to successfully load the edits, we had to patch with a larger constant.
This constant should be configurable so that we wouldn't have to recompile in these odd cases.
Additionally, I think the default should be bumped a bit higher, since it's only a safeguard
against OOME, and people tend to run NNs with multi-GB heaps.

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