[jira] [Updated] (PIG-1748) Add load/store function AvroStorage for avro data
[
https://issues.apache.org/jira/browse/PIG-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Russell Jurney updated PIG-1748:
Attachment: AvroStorageUtils-bagfix.patch
This patch is a fix for a bug for persisting bags of tuples via AvroStorage.
The script that alerted me to a bug is:
messages = LOAD '/tmp/messages.avro' USING AvroStorage();
user_groups = GROUP messages by user_id;
per_user = FOREACH user_groups {
sorted = ORDER messages BY message_id DESC;
GENERATE group AS user_id, sorted AS messages;
}
DESCRIBE per_user
per_user: {user_id: int,messages: {(message_id: int,topic: chararray,user_id:
int)}}
STORE per_user INTO '/tmp/per_user.avro' USING AvroStorage();
The error is:
Pig Stack Trace
---
ERROR 1002: Unable to store alias per_user
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1002: Unable to store
alias per_user
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1596)
at org.apache.pig.PigServer.registerQuery(PigServer.java:584)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:942)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:386)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:188)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:164)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:67)
at org.apache.pig.Main.run(Main.java:487)
at org.apache.pig.Main.main(Main.java:108)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Caused by: java.lang.NullPointerException
at
org.apache.pig.piggybank.storage.avro.AvroStorageUtils.isTupleWrapper(AvroStorageUtils.java:327)
at
org.apache.pig.piggybank.storage.avro.PigSchema2Avro.convert(PigSchema2Avro.java:82)
at
org.apache.pig.piggybank.storage.avro.PigSchema2Avro.convert(PigSchema2Avro.java:105)
at
org.apache.pig.piggybank.storage.avro.PigSchema2Avro.convertRecord(PigSchema2Avro.java:151)
at
org.apache.pig.piggybank.storage.avro.PigSchema2Avro.convert(PigSchema2Avro.java:62)
at
org.apache.pig.piggybank.storage.avro.AvroStorage.checkSchema(AvroStorage.java:502)
at
org.apache.pig.newplan.logical.rules.InputOutputFileValidator$InputOutputFileVisitor.visit(InputOutputFileValidator.java:65)
at
org.apache.pig.newplan.logical.relational.LOStore.accept(LOStore.java:77)
at
org.apache.pig.newplan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:64)
at
org.apache.pig.newplan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:66)
at
org.apache.pig.newplan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:66)
at
org.apache.pig.newplan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:66)
at
org.apache.pig.newplan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:66)
at
org.apache.pig.newplan.DepthFirstWalker.walk(DepthFirstWalker.java:53)
at org.apache.pig.newplan.PlanVisitor.visit(PlanVisitor.java:50)
at
org.apache.pig.newplan.logical.rules.InputOutputFileValidator.validate(InputOutputFileValidator.java:45)
at
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.compile(HExecutionEngine.java:292)
at org.apache.pig.PigServer.compilePp(PigServer.java:1360)
at
org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1297)
at org.apache.pig.PigServer.execute(PigServer.java:1286)
at org.apache.pig.PigServer.access$400(PigServer.java:125)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1591)
... 13 more
Add load/store function AvroStorage for avro data
-
Key: PIG-1748
URL: https://issues.apache.org/jira/browse/PIG-1748
Project: Pig
Issue Type: Improvement
Components: impl
Reporter: lin guo
Assignee: lin guo
Fix For: 0.9.0
Attachments: AvroStorageUtils-bagfix.patch, PIG-1748-2.patch,
PIG-1748-3.patch, avro_storage.patch, avro_test_files.tar.gz
We want to use Pig to process arbitrary Avro data and store results as Avro
files. AvroStorage() extends two PigFuncs: LoadFunc and StoreFunc.
Due to discrepancies of Avro and Pig data models, AvroStorage has:
1. Limited support for record: we do not support recursively defined record
because the number of fields in such records is data dependent.
2.
[jira] [Updated] (PIG-1748) Add load/store function AvroStorage for avro data
[ https://issues.apache.org/jira/browse/PIG-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jakob Homan updated PIG-1748: - Assignee: lin guo (was: Jakob Homan) Add load/store function AvroStorage for avro data - Key: PIG-1748 URL: https://issues.apache.org/jira/browse/PIG-1748 Project: Pig Issue Type: Improvement Components: impl Reporter: lin guo Assignee: lin guo Fix For: 0.9.0 Attachments: PIG-1748-2.patch, PIG-1748-3.patch, avro_storage.patch, avro_test_files.tar.gz We want to use Pig to process arbitrary Avro data and store results as Avro files. AvroStorage() extends two PigFuncs: LoadFunc and StoreFunc. Due to discrepancies of Avro and Pig data models, AvroStorage has: 1. Limited support for record: we do not support recursively defined record because the number of fields in such records is data dependent. 2. Limited support for union: we only accept nullable union like [null, some-type]. For simplicity, we also make the following assumptions: If the input directory is a leaf directory, then we assume Avro data files in it have the same schema; If the input directory contains sub-directories, then we assume Avro data files in all sub-directories have the same schema. AvroStorage takes no input parameters when used as a LoadFunc (except for debug [debug-level]). Users can provide parameters to AvroStorage when used as a StoreFunc. If they don't, Avro schema of output data is derived from its Pig schema. Detailed documentation can be found in http://linkedin.jira.com/wiki/display/HTOOLS/AvroStorage+-+Pig+support+for+Avro+data -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] Updated: (PIG-1748) Add load/store function AvroStorage for avro data
[ https://issues.apache.org/jira/browse/PIG-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Daniel Dai updated PIG-1748: Release Note: (was: Patch committed to trunk. Thanks Lin, Jakob!) Add load/store function AvroStorage for avro data - Key: PIG-1748 URL: https://issues.apache.org/jira/browse/PIG-1748 Project: Pig Issue Type: Improvement Components: impl Reporter: lin guo Assignee: Jakob Homan Fix For: 0.9.0 Attachments: PIG-1748-2.patch, PIG-1748-3.patch, avro_storage.patch, avro_test_files.tar.gz We want to use Pig to process arbitrary Avro data and store results as Avro files. AvroStorage() extends two PigFuncs: LoadFunc and StoreFunc. Due to discrepancies of Avro and Pig data models, AvroStorage has: 1. Limited support for record: we do not support recursively defined record because the number of fields in such records is data dependent. 2. Limited support for union: we only accept nullable union like [null, some-type]. For simplicity, we also make the following assumptions: If the input directory is a leaf directory, then we assume Avro data files in it have the same schema; If the input directory contains sub-directories, then we assume Avro data files in all sub-directories have the same schema. AvroStorage takes no input parameters when used as a LoadFunc (except for debug [debug-level]). Users can provide parameters to AvroStorage when used as a StoreFunc. If they don't, Avro schema of output data is derived from its Pig schema. Detailed documentation can be found in http://snaprojects.jira.com/wiki/display/HTOOLS/AvroStorage+-+Pig+support+for+Avro+data -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] Updated: (PIG-1748) Add load/store function AvroStorage for avro data
[ https://issues.apache.org/jira/browse/PIG-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jakob Homan updated PIG-1748: - Attachment: avro_test_files.tar.gz Attaching binary test avro files used by unit tests. Need to be untgz'ed and placed in contrib/piggybank/java/src/test/java/org/apache/pig/piggybank/test/storage/avro/avro_test_files by reviewer/committer Add load/store function AvroStorage for avro data - Key: PIG-1748 URL: https://issues.apache.org/jira/browse/PIG-1748 Project: Pig Issue Type: Improvement Components: impl Reporter: lin guo Attachments: avro_storage.patch, avro_test_files.tar.gz, PIG-1748-2.patch We want to use Pig to process arbitrary Avro data and store results as Avro files. AvroStorage() extends two PigFuncs: LoadFunc and StoreFunc. Due to discrepancies of Avro and Pig data models, AvroStorage has: 1. Limited support for record: we do not support recursively defined record because the number of fields in such records is data dependent. 2. Limited support for union: we only accept nullable union like [null, some-type]. For simplicity, we also make the following assumptions: If the input directory is a leaf directory, then we assume Avro data files in it have the same schema; If the input directory contains sub-directories, then we assume Avro data files in all sub-directories have the same schema. AvroStorage takes no input parameters when used as a LoadFunc (except for debug [debug-level]). Users can provide parameters to AvroStorage when used as a StoreFunc. If they don't, Avro schema of output data is derived from its Pig schema. Detailed documentation can be found in http://snaprojects.jira.com/wiki/display/HTOOLS/AvroStorage+-+Pig+support+for+Avro+data -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
