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https://issues.apache.org/jira/browse/AVRO-503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12853462#action_12853462
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Jeff Hodges commented on AVRO-503:
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Totally does. Thanks, Eric. I'll take a look.
> 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, sample_bugfix.patch
>
>
> 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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