hadoop - Loading my own python modules for Pig UDFs on Amazon EMR -


i trying call 2 of own modules pig.

here's module_one.py:

import sys  print sys.path  def foo():     pass

here's module_two.py:

from module_one import foo  def bar():     foo()

i got both of them s3.

here's when trying import them pig:

  2015-06-14 12:12:10,578 [main] info  org.apache.pig.main - apache pig version 0.12.0-amzn-2 (rexported) compiled may 05 2015, 19:03:23 2015-06-14 12:12:10,579 [main] info  org.apache.pig.main - logging error messages to: /mnt/var/log/apps/pig.log 2015-06-14 12:12:10,620 [main] info  org.apache.pig.impl.util.utils - default bootup file /home/hadoop/.pigbootup not found 2015-06-14 12:12:11,277 [main] info  org.apache.hadoop.conf.configuration.deprecation - mapred.job.tracker deprecated. instead, use mapreduce.jobtracker.address 2015-06-14 12:12:11,279 [main] info  org.apache.hadoop.conf.configuration.deprecation - fs.default.name deprecated. instead, use fs.defaultfs 2015-06-14 12:12:11,279 [main] info  org.apache.pig.backend.hadoop.executionengine.hexecutionengine - connecting hadoop file system at: hdfs://1.1.1.1:9000 2015-06-14 12:12:12,794 [main] info  org.apache.hadoop.conf.configuration.deprecation - fs.default.name deprecated. instead, use fs.defaultfs
  
grunt> register 's3://mybucket/pig/module_one.py' using jython m1; 2015-06-14 12:12:15,177 [main] info  org.apache.hadoop.conf.configuration.deprecation - fs.default.name deprecated. instead, use fs.defaultfs 2015-06-14 12:12:17,457 [main] info  com.amazon.ws.emr.hadoop.fs.emrfilesystem - consistency disabled, using com.amazon.ws.emr.hadoop.fs.s3n.s3nativefilesystem filesystem implementation 2015-06-14 12:12:17,889 [main] info  amazon.emr.metrics.metricssaver - metricsconfigrecord disabledincluster: false instanceenginecyclesec: 60 clusterenginecyclesec: 60 disableclusterengine: false maxmemorymb: 3072 maxinstancecount: 500  2015-06-14 12:12:17,889 [main] info  amazon.emr.metrics.metricssaver - created metricssaver j-5g45fr7n987g:i-a95a5379:runjar:03073 period:60 /mnt/var/em/raw/i-a95a5379_20150614_runjar_03073_raw.bin 2015-06-14 12:12:18,633 [main] info  com.amazon.ws.emr.hadoop.fs.s3n.s3nativefilesystem - opening 's3://mybucket/pig/module_one.py' reading 2015-06-14 12:12:18,661 [main] info  amazon.emr.metrics.metricssaver - thread 1 created metricslockfreesaver 1 2015-06-14 12:12:18,743 [main] info  org.apache.pig.scripting.jython.jythonscriptengine - created tmp python.cachedir=/tmp/pig_jython_4599752347759040376 2015-06-14 12:12:21,060 [main] warn  org.apache.pig.scripting.jython.jythonscriptengine - pig.cmd.args.remainders empty. not expected unless on testing. ['/home/hadoop/.versions/pig-0.12.0-amzn-2/lib/lib', '/home/hadoop/.versions/pig-0.12.0-amzn-2/lib/jython-standalone-2.5.3.jar/lib', 'classpath', 'pyclasspath/', '/home/hadoop'] 2015-06-14 12:12:21,142 [main] info  org.apache.pig.scripting.jython.jythonscriptengine - register scripting udf: m1.foo
  
grunt> register 's3://mybucket/pig/module_two.py' using jython m2; 2015-06-14 12:12:33,870 [main] info  org.apache.hadoop.conf.configuration.deprecation - fs.default.name deprecated. instead, use fs.defaultfs 2015-06-14 12:12:33,918 [main] info  org.apache.hadoop.conf.configuration.deprecation - fs.default.name deprecated. instead, use fs.defaultfs 2015-06-14 12:12:34,020 [main] info  com.amazon.ws.emr.hadoop.fs.s3n.s3nativefilesystem - opening 's3://mybucket/pig/module_two.py' reading 2015-06-14 12:12:34,064 [main] warn  org.apache.pig.scripting.jython.jythonscriptengine - pig.cmd.args.remainders empty. not expected unless on testing. 2015-06-14 12:12:34,621 [main] error org.apache.pig.tools.grunt.grunt - error 1121: python error. traceback (most recent call last):   file "/tmp/pig1436120267849453375tmp/module_two.py", line 1, in      module_one import foo importerror: no module named module_one details @ logfile: /mnt/var/log/apps/pig.log

i tried:

  • the usual sys.path.append('./lib') , sys.path.append('.'), didn't help

  • hacking folder location sys.path.append(os.path.dirname(__file__)) got nameerror: name '__file__' not defined

  • creating __init__.py , loading register

  • sys.path.append('s3://mybucket/pig/') didn't work either.

i'm using apache pig version 0.12.0-amzn-2 since that's 1 apparently can selected.

you importing first python udf m1, therefore should access namespace m1.foo(), , not module_one.

edit : second python file should :

from m1 import foo  def bar():     foo()

i tested on amazon emr , works.


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