Problem with streaming optimization
-----------------------------------
Key: PIG-226
URL: https://issues.apache.org/jira/browse/PIG-226
Project: Pig
Issue Type: Bug
Reporter: Olga Natkovich
Assignee: Arun C Murthy
Current optimization code assumes that every storeage function implements both
LoadFunc and StoreFunc interfaces and causes an exception if it does not.
2008-05-01 13:31:23,662 [main] ERROR org.apache.pig.tools.grunt.Grunt -
java.lang.RuntimeException: could not instantiate
'org.apache.pig.test.udf.storefunc.DumpLoader' with arguments '[]'
at org.apache.pig.impl.PigContext.instantiateFunc(PigContext.java:515)
at
org.apache.pig.impl.PigContext.instantiateFuncFromSpec(PigContext.java:521)
at
org.apache.pig.impl.logicalLayer.optimizer.streaming.StoreOptimizer.visitStore(StoreOptimizer.java:103)
at org.apache.pig.impl.logicalLayer.LOStore.visit(LOStore.java:121)
at
org.apache.pig.impl.logicalLayer.optimizer.streaming.StoreOptimizer.optimize(StoreOptimizer.java:145)
at org.apache.pig.PigServer.optimizeAndRunQuery(PigServer.java:411)
at org.apache.pig.PigServer.registerQuery(PigServer.java:297)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:450)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:233)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:62)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:60)
at org.apache.pig.Main.main(Main.java:296)
The code that needs to change is in
impl/logicalLayer/optimizer/streaming/LoadOptimizer.java and
impl/logicalLayer/optimizer/streaming/StoreOptimizer.java.
The logic that needs to be added is if the load/store interface is not
implemented then disable optimization.
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