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From "Eric Evans (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AVRO-503) ArrayIndexOutOfBoundsException with nested maps
Date Sun, 04 Apr 2010 23:09:27 GMT

     [ https://issues.apache.org/jira/browse/AVRO-503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Evans updated AVRO-503:
----------------------------

    Attachment: cass.tar.gz

> ArrayIndexOutOfBoundsException with nested maps
> -----------------------------------------------
>
>                 Key: AVRO-503
>                 URL: https://issues.apache.org/jira/browse/AVRO-503
>             Project: Avro
>          Issue Type: Bug
>          Components: java, python
>    Affects Versions: 1.3.2
>            Reporter: Eric Evans
>         Attachments: cass.tar.gz
>
>
> I'm attempting to add an avro equivalent to Cassandra's batch_mutate() method (thrift
def here: https://svn.apache.org/repos/asf/cassandra/trunk/interface/cassandra.thrift). This
is the first time I've attempted to nest maps within maps, and I'm assuming it's related since
that seems like the only difference to the working examples I have.
> Attached is a tarball that includes the protocol I'm using along with java and python
examples (src/BatchMutate.java and py/batch_mutate.py) that reproduce the exceptions I'm seeing.
> Running the java example produces:
> {noformat} 
> Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1
> 	at org.apache.avro.io.parsing.Symbol$Alternative.getSymbol(Symbol.java:364)
> 	at org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:191)
> 	at org.apache.avro.io.parsing.Parser.advance(Parser.java:88)
> 	at org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:168)
> 	at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:81)
> 	at org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:105)
> 	at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:77)
> 	at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:70)
> 	at org.apache.avro.ipc.Requestor.readHandshake(Requestor.java:181)
> 	at org.apache.avro.ipc.Requestor.request(Requestor.java:116)
> 	at org.apache.avro.specific.SpecificRequestor.invoke(SpecificRequestor.java:52)
> 	at $Proxy0.batch_mutate(Unknown Source)
> 	at BatchMutate.main(BatchMutate.java:43)
> {noformat} 
> Running the python examples produces:
> {noformat} 
> Traceback (most recent call last):
>   File "/usr/lib/pymodules/python2.5/nose/case.py", line 183, in runTest
>     self.test(*self.arg)
>   File "/home/eevans/dev/src/git/cassandra/test/system/test_avro_server.py", line 161,
in test_batch_mutate
>     self.client.request('batch_mutate', params)
>   File "/usr/local/lib/python2.5/site-packages/avro/ipc.py", line 146, in request
>     return self.request(message_name, request_datum)
>   File "/usr/local/lib/python2.5/site-packages/avro/ipc.py", line 142, in request
>     call_response_exists = self.read_handshake_response(buffer_decoder)
>   File "/usr/local/lib/python2.5/site-packages/avro/ipc.py", line 188, in read_handshake_response
>     handshake_response = HANDSHAKE_REQUESTOR_READER.read(decoder)
>   File "/usr/local/lib/python2.5/site-packages/avro/io.py", line 411, in read
>     return self.read_data(self.writers_schema, self.readers_schema, decoder)
>   File "/usr/local/lib/python2.5/site-packages/avro/io.py", line 455, in read_data
>     return self.read_record(writers_schema, readers_schema, decoder)
>   File "/usr/local/lib/python2.5/site-packages/avro/io.py", line 643, in read_record
>     field_val = self.read_data(field.type, readers_field.type, decoder)
>   File "/usr/local/lib/python2.5/site-packages/avro/io.py", line 453, in read_data
>     return self.read_union(writers_schema, readers_schema, decoder)
>   File "/usr/local/lib/python2.5/site-packages/avro/io.py", line 608, in read_union
>     selected_writers_schema = writers_schema.schemas[index_of_schema]
> IndexError: list index out of range
> {noformat} 

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