Marko Lukša created ISPN-2889:
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Summary: AbstractIterator shouldn't allocate a larger result array than
is necessary
Key: ISPN-2889
URL:
https://issues.jboss.org/browse/ISPN-2889
Project: Infinispan
Issue Type: Enhancement
Components: Querying
Reporter: Marko Lukša
Assignee: Marko Lukša
Currently {{AbstractIterator}} (superclass of LazyIterator and EagerIterator) always
allocates an {{Object[]}} array of size {{fetchSize}}, even when the actual number of
results is smaller than {{fetchSize}}.
This is especially problematic when the user wants to fetch all the results at once (by
setting fetchSize to a very large number such as Integer.MAX_VALUE). This results in an
OutOfMemoryError: Requested array size exceeds VM limit.
Since the number of results is known up-front, {{AbstractIterator}} can allocate a smaller
array.
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