Our Community is getting an upgrade! To get everything ready for the relaunch, we’ll be placing the site in read-only mode starting September 21st.
We really appreciate your understanding while we get things set up behind the scenes. Catch up on all the exciting details about the move here.
Need help or have questions? Drop us a line at [email protected]
Created on
01-22-2015
12:40 AM
- last edited on
04-21-2026
06:59 AM
by
GrazittiAPI
Hello,
I created a json table in Hive and then I loaded data from a folder into it. The query is sucessful.
ADD JAR /data/hive/jars/json-serde-1.3-jar-with-dependencies.jar;
Select * from myTable
However, when I try to access the table I get an error:
java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
When I try to access the same table with the same query in Hive shell I do not get any error and I can acess the table.
Where should I look for? IS there any other jar that I have to add in order to make this work in beeswax(hue)?
Thank you!
Created 02-03-2015 06:01 AM
Created 02-03-2015 06:01 AM
In the select there was a ',' missing.
Created 02-03-2015 06:26 AM
Created 05-01-2015 04:35 PM
hi, Romain,
I am having the same issue. I just installed CDH5.4 and use json-serde-1.3-jar-with-dependencies.jar to create external table.
CREATE EXTERNAL TABLE IF NOT EXISTS mytable2 (field1 string, field2 int, field3 string, field4 double) ROW FORMAT SERDE 'org.openx.data.jsonserde.JsonSerDe' WITH SERDEPROPERTIES ( "ignore.malformed.json" = "true") LOCATION '/tmp/mytable2';
The testing data is:
{"field1":"data1","field2":100,"field3":"more data1","field4":123.001}
In Hive CLI I am able to query the table. But when I use beeline or Hue interface, I got the same error:
Error: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer (state=,code=0)
I have copied the json-serde-1.3-jar-with-dependencies.jar to the following directory but it still does not work:
/var/opt/cloudera/parcels/CDH/lib/hive/lib/
/var/opt/cloudera/parcels/CDH/lib/hadoop/lib/
/var/opt/cloudera/parcels/CDH/lib/hadoop-mapreduce/lib/
/var/opt/cloudera/parcels/CDH/lib/hadoop-0.20-mapreduce/lib/
Do you know the reason?
thanks
Bin
Created 05-04-2015 08:58 PM
Created on 05-17-2016 10:06 AM - edited 05-17-2016 10:21 AM
Hi Romainr,
I am using cdh5.5.2 with Hue 3.9.0.
As part of Hive Config, I have set Hive Auxiliary JARs Directory as '/usr/lib/hive/lib' which contains the Json Serde Jar.
Further I have -
1) Using Hive Command Line - Created a table in Hive, with [ ROW FORMAT SERDE 'com.cloudera.hive.serde.JSONSerDe' ]
2) Loaded sample data to Hive table
3) Ran 'select * tableName;' successfully.
4) When I ran the same in < Hue - Hive Editor >, I am facing the following error-
FAILED: RuntimeException MetaException(message:java.lang.ClassNotFoundException Class com.cloudera.hive.serde.JSONSerDe not found)
Can you please advise ?