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https://issues.apache.org/jira/browse/GEODE-625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15264862#comment-15264862
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Dan Smith commented on GEODE-625:
---------------------------------
After some discussion with [~agingade], we came up with the following proposal:
# Change the behavior of calling ResultSender.sendResult/lastResult with an
exception. Anything passed to sendResult/lastResult will be passed on directly
to ResultCollector.addResult, including exceptions.
# Deprecate sendException. It will retain the current behavior where
ResultSender.sendException gets passed to ResultCollector.addResult.
# Add a new method on the ResultCollector, addThrowable, that will receive any
exceptions thrown by the function during execution. Currently the user's
ResultCollector never sees these exceptions, so ResultCollector will have a
default implementation of this method that will just ignore the exception.
# Add a method on the ResultSender, sendThrowable, that will behave the same as
throwing an exception from the function.
> A function's ResultCollector throws ClassCastException when
> ResultSender.sendException is invoked
> -------------------------------------------------------------------------------------------------
>
> Key: GEODE-625
> URL: https://issues.apache.org/jira/browse/GEODE-625
> Project: Geode
> Issue Type: Bug
> Components: functions
> Reporter: Ashvin
> Assignee: Dan Smith
>
> For e.g. If LuceneFunction.execute invokes resultSender.sendException, the
> following error is generated.
> {code}
> java.lang.ClassCastException: java.lang.IllegalArgumentException cannot be
> cast to com.gemstone.gemfire.cache.lucene.int
> ernal.distributed.TopEntriesCollector
> at
> com.gemstone.gemfire.cache.lucene.internal.distributed.TopEntriesFunctionCollector.addResult(TopEntriesFunctionColle
> ctor.java:1)
> at
> com.gemstone.gemfire.internal.cache.execute.LocalResultCollectorImpl.addResult(LocalResultCollectorImpl.java:76)
> at
> com.gemstone.gemfire.internal.cache.execute.PartitionedRegionFunctionResultSender.lastResult(PartitionedRegionFuncti
> onResultSender.java:208)
> at
> com.gemstone.gemfire.internal.cache.execute.PartitionedRegionFunctionResultSender.lastResult(PartitionedRegionFuncti
> onResultSender.java:166)
> at
> com.gemstone.gemfire.internal.cache.execute.PartitionedRegionFunctionResultSender.sendException(PartitionedRegionFun
> ctionResultSender.java:301)
> at
> com.gemstone.gemfire.cache.lucene.internal.distributed.LuceneFunction.execute(LuceneFunction.java:52)
> {code}
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