[HIVE-7847] query orc partitioned table fail when table column type change

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.11.0, 0.12.0, 0.13.0
• Component/s: File Formats
• Assignee: Zhichun Wu
• Reporter: Zhichun Wu
• Created: 22/Aug/14 06:04
• Updated: 07/Dec/16 23:51

Description

I use the following script to test orc column type change with partitioned table on branch-0.13:

use test;
DROP TABLE if exists orc_change_type_staging;
DROP TABLE if exists orc_change_type;
CREATE TABLE orc_change_type_staging (
    id int
);
CREATE TABLE orc_change_type (
    id int
) PARTITIONED BY (`dt` string)
stored as orc;
--- load staging table
LOAD DATA LOCAL INPATH '../hive/examples/files/int.txt' OVERWRITE INTO TABLE orc_change_type_staging;
--- populate orc hive table
INSERT OVERWRITE TABLE orc_change_type partition(dt='20140718') select * FROM orc_change_type_staging limit 1;
--- change column id from int to bigint
ALTER TABLE orc_change_type CHANGE id id bigint;
INSERT OVERWRITE TABLE orc_change_type partition(dt='20140719') select * FROM orc_change_type_staging limit 1;
SELECT id FROM orc_change_type where dt between '20140718' and '20140719';

if fails in the last query "SELECT id FROM orc_change_type where dt between '20140718' and '20140719';" with exception:

Error: java.io.IOException: java.io.IOException: java.lang.ClassCastException: org.apache.hadoop.io.IntWritable cannot be cast to org.apache.hadoop.io.LongWritable
        at org.apache.hadoop.hive.io.HiveIOExceptionHandlerChain.handleRecordReaderNextException(HiveIOExceptionHandlerChain.java:121)
        at org.apache.hadoop.hive.io.HiveIOExceptionHandlerUtil.handleRecordReaderNextException(HiveIOExceptionHandlerUtil.java:77)
        at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.doNextWithExceptionHandler(HadoopShimsSecure.java:256)
        at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.next(HadoopShimsSecure.java:171)
        at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.moveToNext(MapTask.java:197)
        at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.next(MapTask.java:183)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:52)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:429)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157)
Caused by: java.io.IOException: java.lang.ClassCastException: org.apache.hadoop.io.IntWritable cannot be cast to org.apache.hadoop.io.LongWritable
        at org.apache.hadoop.hive.io.HiveIOExceptionHandlerChain.handleRecordReaderNextException(HiveIOExceptionHandlerChain.java:121)
        at org.apache.hadoop.hive.io.HiveIOExceptionHandlerUtil.handleRecordReaderNextException(HiveIOExceptionHandlerUtil.java:77)
        at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:344)
        at org.apache.hadoop.hive.ql.io.CombineHiveRecordReader.doNext(CombineHiveRecordReader.java:101)
        at org.apache.hadoop.hive.ql.io.CombineHiveRecordReader.doNext(CombineHiveRecordReader.java:41)
        at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.next(HiveContextAwareRecordReader.java:122)
        at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.doNextWithExceptionHandler(HadoopShimsSecure.java:254)
        ... 11 more
Caused by: java.lang.ClassCastException: org.apache.hadoop.io.IntWritable cannot be cast to org.apache.hadoop.io.LongWritable
        at org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$LongTreeReader.next(RecordReaderImpl.java:717)
        at org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StructTreeReader.next(RecordReaderImpl.java:1788)
        at org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl.next(RecordReaderImpl.java:2997)
        at org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$OrcRecordReader.next(OrcInputFormat.java:153)
        at org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$OrcRecordReader.next(OrcInputFormat.java:127)
        at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:339)
        ... 15 more

The value object would be reused each time we deserialize the row, it will fail when we start to process the next path with different schema. Resetting value each time we finish reading one path would solve this problem.