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Steve Loughran commented on HADOOP-8619: ---------------------------------------- Before committing this, I'm going to add one more bit of homework: add a test that serializes then deserializes something of the std. writables. Why? Your goal is to ser/deser things -the ctor is just a means to that end. Add a test of the desired behaviour and you can be confident that it doesn't break in future. > WritableComparator must implement no-arg constructor > ---------------------------------------------------- > > Key: HADOOP-8619 > URL: https://issues.apache.org/jira/browse/HADOOP-8619 > Project: Hadoop Common > Issue Type: Improvement > Components: io > Affects Versions: 3.0.0 > Reporter: Radim Kolar > Fix For: 0.23.0, 2.0.0-alpha, 3.0.0 > > Attachments: writable-comparator.txt > > > Because of reasons listed here: > http://findbugs.sourceforge.net/bugDescriptions.html#SE_COMPARATOR_SHOULD_BE_SERIALIZABLE > comparators should be serializable. To make deserialization work, it is > required that all superclasses have no-arg constructor. > http://findbugs.sourceforge.net/bugDescriptions.html#SE_NO_SUITABLE_CONSTRUCTOR > Simply add no=arg constructor to WritableComparator. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira