[jira] [Created] (OAK-567) DiffBuilder performance problem

["Thomas Mueller (JIRA)" <ji...@apache.org>]

Thomas Mueller created OAK-567:
----------------------------------

             Summary: DiffBuilder performance problem
                 Key: OAK-567
                 URL: https://issues.apache.org/jira/browse/OAK-567
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: mk
            Reporter: Thomas Mueller
            Assignee: Thomas Mueller


The org.apache.jackrabbit.mk.model.tree.DiffBuilder is very slow because it uses:

{code}
HashMap<NodeState, String>
{code}

and at the same time

{code}
class AbstractNodeState implements NodeState {
        /**
     * Returns a hash code that's compatible with how the
     * {@link #equals(Object)} method is implemented. The current
     * implementation simply returns zero for everything since
     * {@link NodeState} instances are not intended for use as hash keys.
     *
     * @return hash code
     */
    @Override
    public int hashCode() {
        return 0;
    }
}
{code}

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