@useryy2 I have tried the same query in Hive-3.1.3000.7.1.7.0-551 and did not get any error +----------------------------------------------------+ | createtab_stmt | +----------------------------------------------------+ | CREATE EXTERNAL TABLE `testexplode`( | | `name` string, | | `childs` array<string>, | | `amap` map<string,string>) | | ROW FORMAT SERDE | | 'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe' | | WITH SERDEPROPERTIES ( | | 'collection.delim'=',', | | 'field.delim'='\t', | | 'line.delim'='\n', | | 'mapkey.delim'=':', | | 'serialization.format'='\t') | | STORED AS INPUTFORMAT | | 'org.apache.hadoop.mapred.TextInputFormat' | | OUTPUTFORMAT | | 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat' | | LOCATION | | 'hdfs://c1448-xxxx.cloudera.com:8020/warehouse/tablespace/external/hive/testexplode' | | TBLPROPERTIES ( | | 'bucketing_version'='2', | | 'transient_lastDdlTime'='1646831327') | +----------------------------------------------------+ And the query result is  0: jdbc:hive2://c1448-xxxx.coelab.cloudera.c> select explode(childs) from testexplode; INFO : Compiling command(queryId=hive_20220311124936_b4346a2e-121e-4d4c-8c8f-b05ce3cfc4c9): select explode(childs) from testexplode INFO : No Stats for default@testexplode, Columns: amap, name, childs INFO : Semantic Analysis Completed (retrial = false) INFO : Created Hive schema: Schema(fieldSchemas:[FieldSchema(name:col, type:string, comment:null)], properties:null) INFO : Completed compiling command(queryId=hive_20220311124936_b4346a2e-121e-4d4c-8c8f-b05ce3cfc4c9); Time taken: 2.262 seconds INFO : Executing command(queryId=hive_20220311124936_b4346a2e-121e-4d4c-8c8f-b05ce3cfc4c9): select explode(childs) from testexplode INFO : Completed executing command(queryId=hive_20220311124936_b4346a2e-121e-4d4c-8c8f-b05ce3cfc4c9); Time taken: 0.062 seconds INFO : OK +---------+ | col | +---------+ | child1 | | child2 | | child3 | | child4 | | child5 | | child6 | | child7 | | child8 | +---------+ 8 rows selected (2.626 seconds)  Could you please try connect beeline with --verbose=true flag and share the complete stack trace to see the exact cause of the problem, also share hive version being used ... View more