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Prepare sourceCall by scheme #37

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Prepare sourceCall by scheme #37

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1 change: 1 addition & 0 deletions cascading-core/src/main/java/cascading/tuple/TupleEntrySchemeIterator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -165,6 +165,7 @@ private TupleEntry getNext() throws IOException
if( !hasWaiting && inputIterator.hasNext() )
{
sourceCall.setInput( wrapInput( inputIterator.next() ) );
scheme.sourcePrepare( flowProcess, sourceCall );
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is there going to be a big hit to call this each time? Is this the right fix vs in elephantbird?

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this will hit only once we switch between recordReaders.

Unfortunately, it's impossible to fix in every possible recordRead. many of them written in the same way which used in ElephantBird. I think it's a problem with "elegant" design of recordReader in hadoop, createKey and createValue creates mutable objects which passed to method next which supposed to mutate them.


return getNext();
}
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