Unable to find alias in a bag with nested schema
------------------------------------------------
Key: PIG-2485
URL: https://issues.apache.org/jira/browse/PIG-2485
Project: Pig
Issue Type: Bug
Affects Versions: 0.9.2, 0.10
Reporter: Brandon Williams
I've created a loadfunc that implements LoadMetadata and returns a schema as
follows:
{noformat}
(key: bytearray,columns: {((name: chararray,owner_id: chararray))})
{noformat}
(the code is at CASSANDRA-3371 if you want to take a look)
However, whenever I try to access tuple fields within the bag, they cannot be
found:
{noformat}
rows = LOAD 'cassandra://Keyspace1/Standard1' USING CassandraStorage();
one = filter rows by columns.owner_id eq 'foo';
dump one;
{format}
Produces:
{noformat}
2012-01-20 20:12:14,858 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
1200: Pig script failed to parse:
<file foo.pig, line 2, column 7> pig script failed to validate:
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1128: Cannot find
field owner_id in :tuple(name:chararray,owner_id:chararray)
{noformat}
Replacing the bag with another tuple works and all the fields are accessible.
I've tried this against the 0.9 and 0.10 branch heads with no luck. Trunk
produces a slight different error:
{noformat}
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1000: Error during
parsing. Pig script failed to parse:
<file foo.pig, line 2, column 7> pig script failed to validate:
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1127: Index 1 out of
range in schema::tuple(name:chararray,column_family:chararray)
at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1598)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1541)
{noformat}
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