LoadFunc and StoreFunc implementations should be instanciated only once in the
FE and once in the BE per call in a given script
-------------------------------------------------------------------------------------------------------------------------------
Key: PIG-2654
URL: https://issues.apache.org/jira/browse/PIG-2654
Project: Pig
Issue Type: Improvement
Reporter: Julien Le Dem
I'm running the following script:
{code}
A = LOAD 'foo' USING Loader();
STORE A INTO 'bar' USING Storer();
{code}
Using instrumented Loader an Storer I get the following result:
* 7 instances of Loader
* 6 instances of Storer
each instance gets an ID and logs the calls to its methods:
{code}
Loader(1).<init> called by
org.apache.pig.parser.LogicalPlanBuilder.validateFuncSpec(LogicalPlanBuilder.java:791)
Loader(2).<init> called by
org.apache.pig.parser.LogicalPlanBuilder.getAbolutePathForLoad(LogicalPlanBuilder.java:417)
Loader(2).relativeToAbsolutePath called by
org.apache.pig.parser.LogicalPlanBuilder.getAbolutePathForLoad(LogicalPlanBuilder.java:421)
Loader(3).<init> called by
org.apache.pig.parser.LogicalPlanBuilder.validateFuncSpec(LogicalPlanBuilder.java:791)
Loader(4).<init> called by
org.apache.pig.parser.LogicalPlanBuilder.getAbolutePathForLoad(LogicalPlanBuilder.java:417)
Storer(1).<init> called by
org.apache.pig.parser.LogicalPlanBuilder.validateFuncSpec(LogicalPlanBuilder.java:791)
Storer(2).<init> called by
org.apache.pig.parser.LogicalPlanBuilder.getAbolutePathForStore(LogicalPlanBuilder.java:478)
Storer(2).setStoreFuncUDFContextSignature called by
org.apache.pig.parser.LogicalPlanBuilder.getAbolutePathForStore(LogicalPlanBuilder.java:481)
Storer(2).relToAbsPathForStoreLocation called by
org.apache.pig.parser.LogicalPlanBuilder.getAbolutePathForStore(LogicalPlanBuilder.java:484)
Storer(3).<init> called by
org.apache.pig.newplan.logical.relational.LOStore.<init>(LOStore.java:55)
Storer(3).setStoreFuncUDFContextSignature called by
org.apache.pig.newplan.logical.relational.LOStore.setSignature(LOStore.java:129)
Loader(5).<init> called by
org.apache.pig.newplan.logical.relational.LOLoad.getLoadFunc(LOLoad.java:77)
Loader(5).setUDFContextSignature called by
org.apache.pig.newplan.logical.relational.LOLoad.getLoadFunc(LOLoad.java:78)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Storer(3).setStoreFuncUDFContextSignature called by
org.apache.pig.newplan.logical.relational.LOStore.setSignature(LOStore.java:129)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Storer(3).setStoreLocation called by
org.apache.pig.newplan.logical.rules.InputOutputFileValidator$InputOutputFileVisitor.visit(InputOutputFileValidator.java:68)
Storer(3).getOutputFormat called by
org.apache.pig.newplan.logical.rules.InputOutputFileValidator$InputOutputFileVisitor.visit(InputOutputFileValidator.java:80)
Loader(5).getSchema called by
org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:151)
Loader(5).setLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.getJob(JobControlCompiler.java:389)
Storer(4).<init> called by
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getStoreFunc(POStore.java:232)
Storer(4).setStoreFuncUDFContextSignature called by
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getStoreFunc(POStore.java:233)
Storer(4).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.getJob(JobControlCompiler.java:480)
Storer(5).<init> called by
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getStoreFunc(POStore.java:232)
Storer(5).setStoreFuncUDFContextSignature called by
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getStoreFunc(POStore.java:233)
Storer(5).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setLocation(PigOutputFormat.java:170)
Storer(5).getOutputFormat called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.checkOutputSpecsHelper(PigOutputFormat.java:203)
Loader(6).<init> called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:254)
Loader(6).setUDFContextSignature called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.passLoadSignature(PigInputFormat.java:187)
Loader(6).setLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:266)
Loader(6).getInputFormat called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:272)
Storer(6).<init> called by
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getStoreFunc(POStore.java:232)
Storer(6).setStoreFuncUDFContextSignature called by
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getStoreFunc(POStore.java:233)
Storer(6).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setLocation(PigOutputFormat.java:170)
Storer(6).getOutputFormat called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputCommitter.getCommitters(PigOutputCommitter.java:92)
Storer(6).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setLocation(PigOutputFormat.java:170)
Loader(7).<init> called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getLoadFunc(PigInputFormat.java:158)
Loader(7).setUDFContextSignature called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.passLoadSignature(PigInputFormat.java:187)
Loader(7).setLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.mergeSplitSpecificConf(PigInputFormat.java:138)
Loader(7).getInputFormat called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.createRecordReader(PigInputFormat.java:117)
Storer(6).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setLocation(PigOutputFormat.java:170)
Storer(6).getOutputFormat called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.getRecordWriter(PigOutputFormat.java:84)
Storer(6).prepareToWrite called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.<init>(PigOutputFormat.java:125)
Loader(7).setUDFContextSignature called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.passLoadSignature(PigInputFormat.java:187)
Loader(7).prepareToRead called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.initialize(PigRecordReader.java:182)
Loader(7).getNext called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.nextKeyValue(PigRecordReader.java:194)
Storer(6).putNext called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:139)
Loader(7).getNext called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.nextKeyValue(PigRecordReader.java:194)
Storer(6).putNext called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:139)
Loader(7).getNext called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.nextKeyValue(PigRecordReader.java:194)
Storer(6).putNext called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.write(PigOutputFormat.java:139)
Loader(7).getNext called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.nextKeyValue(PigRecordReader.java:194)
Storer(6).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setLocation(PigOutputFormat.java:170)
Storer(6).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setLocation(PigOutputFormat.java:170)
Storer(4).setStoreLocation called by
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setLocation(PigOutputFormat.java:170)
{code}
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