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From "Zhiwen Sun (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-6301) get_json_object throw java.lang.IllegalStateException: No match found exception.
Date Fri, 24 Jan 2014 01:42:38 GMT
Zhiwen Sun created HIVE-6301:
--------------------------------

             Summary: get_json_object throw java.lang.IllegalStateException: No match found
exception.
                 Key: HIVE-6301
                 URL: https://issues.apache.org/jira/browse/HIVE-6301
             Project: Hive
          Issue Type: Bug
    Affects Versions: 0.12.0, 0.11.0, 0.10.0
            Reporter: Zhiwen Sun
            Priority: Critical


In fact, you can find the bug in code.

https://github.com/apache/hive/blob/branch-0.10/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFJson.java#L190

Miss call _mKey.matches()_ before use _mKey.group(1)_

The bug still exists in the newest version.

So, we met such exception in some query:


{quote}

2014-01-23 11:08:19,869 FATAL ExecReducer: org.apache.hadoop.hive.ql.metadata.HiveException:
Unable to execute method public org.apache.hadoop.io.Text org.apache.hadoop.hive.ql.udf.UDFJson.evaluate(java.lang.String,java.lang.String)
 on object org.apache.hadoop.hive.ql.udf.UDFJson@c7056d5 of class org.apache.hadoop.hive.ql.udf.UDFJson
with arguments {{ .... }:java.lang.String, $.6:java.lang.String} of size 2
Caused by: java.lang.IllegalStateException: No match found
	at java.util.regex.Matcher.group(Matcher.java:468)
	at org.apache.hadoop.hive.ql.udf.UDFJson.extract(UDFJson.java:190)
	at org.apache.hadoop.hive.ql.udf.UDFJson.evaluate(UDFJson.java:154)
	... 24 more

{quote}



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