[HIVE-10234] Problems using custom inputformat

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 0.13.1
• Component/s: File Formats
• Labels: inputformat

Environment

CentOS release 6.3
CDH-5.3.1-1.cdh5.3.1.p0.5
hive-0.13.1-cdh5.3.1
Inputformat: https://github.com/twitter/elephant-bird/blob/master/rcfile/src/main/java/com/twitter/elephantbird/mapreduce/input/RCFileProtobufInputFormat.java

• Assignee: Unassigned
• Reporter: xuhuan
• Created: 07/Apr/15 01:50
• Updated: 02/Oct/19 16:19

Description

I apply the RCFileProtobufInputFormat from twitter's elephantbird project into hive to handle Protobuf records which are written in a RCFile file format. What I have done is belowing:
1. compile the soure code of RCFileProtobufInputFormat and make a jar
2. add the jar to hive_aux_jar_path and update the config of server and client
3. create table using inputformat "com.twitter.elephantbird.mapreduce.input.RCFileProtobufInputFormat"
Creating table is ok.but when I excute a query like "select * from table test"(there is no data in table test),I got these mistake: FAILED: SemanticException 1:14 Input format must implement InputFormat. Error encountered near token test.
I found some cases in stackoverflow,someones said that's because the custom inputformat class implement the new API(org.apache.hadoop.marpreduce) and RCFileProtobufInputFormat class indeed extends the new API. I'm wondering if a custom inputformat must extend the old API(org.apache.hadoop.marpred)? Could this be the reason of my problem?