Hmmm, now it gets past my mention of the function, but when I run a dump
on generated information, I get:
2011-09-12 14:48:12,814 [main] ERROR org.apache.pig.tools.grunt.Grunt -
ERROR 2997: Unable to recreate exception from backed error:
java.lang.ClassCastException: *org.apache.pig.data.DataByteArray cannot
be cast to java.lang.String*
Thanks for all the help so far!
Eli
On 9/12/11 2:42 PM, Dmitriy Ryaboy wrote:
You also want json-simple-1.1.jar
On Mon, Sep 12, 2011 at 10:46 AM, Eli Finkelshteyn<[email protected]>wrote:
Hmm, I'm loading up hadoop-lzo.*.jar, elephant-bird.*.jar, guava-*.jar, and
piggybank.jar, and then trying to use that UDF, but getting the following
error:
ERROR 2998: Unhandled internal error. org/json/simple/parser/**
ParseException
java.lang.**NoClassDefFoundError: org/json/simple/parser/**ParseException
at java.lang.Class.forName0(**Native Method)
at java.lang.Class.forName(Class.**java:247)
at org.apache.pig.impl.**PigContext.resolveClassName(**
PigContext.java:426)
at org.apache.pig.impl.**PigContext.**instantiateFuncFromSpec(**
PigContext.java:456)
at org.apache.pig.impl.**PigContext.**instantiateFuncFromSpec(**
PigContext.java:508)
at org.apache.pig.impl.**PigContext.**instantiateFuncFromAlias(**
PigContext.java:531)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.EvalFuncSpec(**QueryParser.java:5462)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.BaseEvalSpec(**QueryParser.java:5291)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.UnaryExpr(**QueryParser.java:5187)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.CastExpr(**QueryParser.java:5133)
at org.apache.pig.impl.**logicalLayer.parser.**QueryParser.**
MultiplicativeExpr(**QueryParser.java:5042)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.AdditiveExpr(**QueryParser.java:4968)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.InfixExpr(**QueryParser.java:4934)
at org.apache.pig.impl.**logicalLayer.parser.**QueryParser.**
FlattenedGenerateItem(**QueryParser.java:4861)
at org.apache.pig.impl.**logicalLayer.parser.**QueryParser.**
FlattenedGenerateItemList(**QueryParser.java:4747)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.GenerateStatement(**QueryParser.java:4704)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.NestedBlock(**QueryParser.java:4030)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.ForEachClause(**QueryParser.java:3433)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.BaseExpr(**QueryParser.java:1464)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.Expr(QueryParser.**java:1013)
at org.apache.pig.impl.**logicalLayer.parser.**
QueryParser.Parse(QueryParser.**java:800)
etc...
Any ideas? I've verified that it recognizes the function itself, and that
the data it's running on is valid json. Not sure what else I can check.
Eli
On 9/9/11 7:13 PM, Dmitriy Ryaboy wrote:
They derive from the same classes as far as lzo handling goes, so I
suspect
something's up with your environment or inputs if you get
LzoTokenizedLoader
to work, but LzoJsonStorage does not.
Note that LzoTokenizedLoader is deprecated -- just use LzoPigStorage.
JsonLoader wouldn't work for you because it expects the complete input
line
to be json, not part of it. You want to load with LzoPigStorage, and then
apply the JsonStringToMap udf to the third field.
-D
On Fri, Sep 9, 2011 at 3:49 PM, Eli
Finkelshteyn<iefinkel@gmail.**com<[email protected]>>
wrote:
Hi,
I'm currently working on trying to load lzos that contain some JSON
elements. This is of the form:
item1 item2 {'thing1':'1','thing2':'2'}
item3 item4 {'thing3':'1','thing27':'2'}
item5 item6 {'thing5':'1','thing19':'2'}
I was thinking I could use LzoJsonLoader for this, but it keeps throwing
me
errors like:
ERROR com.hadoop.compression.lzo.****LzoCodec - Cannot load native-lzo
without native-hadoop
This is despite the fact that I can load normal lzos just fine using
LzoTokenizedLoader('\\t'). So, now I'm at a bit of a standstill. What
should
I do to go about loading these files? Does anyone have any ideas?
Cheers,
Eli
