[
https://issues.apache.org/jira/browse/HIVE-26373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Stamatis Zampetakis resolved HIVE-26373.
----------------------------------------
Fix Version/s: 4.0.0-alpha-2
Resolution: Fixed
Fixed in
[https://github.com/apache/hive/commit/97d7630bca10e96229519ab397f5cf122e5622e3.]
Thanks for the PR [~soumyakanti.das] !
> ClassCastException when reading timestamps from HBase table with Avro data
> --------------------------------------------------------------------------
>
> Key: HIVE-26373
> URL: https://issues.apache.org/jira/browse/HIVE-26373
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Soumyakanti Das
> Assignee: Soumyakanti Das
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0-alpha-2
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Consider an HBase table (e.g., HiveAvroTable) that has column with Avro data
> and there are timestamps nested under complex/struct types.
> {code:sql}
> CREATE EXTERNAL TABLE hbase_avro_table(
> `key` string COMMENT '',
> `data_frv4` struct<`id`:string, `dischargedate`:struct<`value`:timestamp>>)
> ROW FORMAT SERDE
> 'org.apache.hadoop.hive.hbase.HBaseSerDe'
> STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
> WITH SERDEPROPERTIES (
> 'serialization.format'='1',
> 'hbase.columns.mapping' = ':key,data:frV4',
> 'data.frV4.serialization.type'='avro',
> 'data.frV4.avro.schema.url'='path/to/avro/schema/for/column/filename.avsc'
> )
> TBLPROPERTIES (
> 'hbase.table.name' = 'HiveAvroTable',
> 'hbase.struct.autogenerate'='true');
> {code}
> Any attempt to read the timestamp value from the nested struct leads to a
> {{{}ClassCastException{}}}.
> {code:sql}
> select data_frV4.dischargedate.value from hbase_avro_table;
> {code}
> Below you can find the stack trace for the previous query:
> {noformat}
> 2022-07-05T08:40:51,572 ERROR [LocalJobRunner Map Task Executor #0]
> mr.ExecMapper: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
> Error while processing row
> at
> org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:573)
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:148)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecMapRunner.run(ExecMapRunner.java:37)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:465)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:349)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:271)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.ClassCastException:
> org.apache.hadoop.hive.common.type.Timestamp cannot be cast to
> org.apache.hadoop.hive.serde2.lazy.LazyPrimitive
> at
> org.apache.hadoop.hive.serde2.lazy.objectinspector.primitive.AbstractPrimitiveLazyObjectInspector.getPrimitiveWritableObject(AbstractPrimitiveLazyObjectInspector.java:40)
> at
> org.apache.hadoop.hive.serde2.lazy.objectinspector.primitive.LazyTimestampObjectInspector.getPrimitiveWritableObject(LazyTimestampObjectInspector.java:29)
> at
> org.apache.hadoop.hive.serde2.lazy.LazyUtils.writePrimitiveUTF8(LazyUtils.java:308)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:292)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serializeField(LazySimpleSerDe.java:247)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.doSerialize(LazySimpleSerDe.java:231)
> at
> org.apache.hadoop.hive.serde2.AbstractEncodingAwareSerDe.serialize(AbstractEncodingAwareSerDe.java:55)
> at
> org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:1059)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:937)
> at
> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:95)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:937)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:128)
> at
> org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:152)
> at
> org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:552)
> ... 11 more
> {noformat}
> The problem starts in {{toLazyObject}} method of
> {*}AvroLazyObjectInspector.java{*}, when
> [this|https://github.com/apache/hive/blob/53009126f6fe7ccf24cf052fd6c156542f38b19d/serde/src/java/org/apache/hadoop/hive/serde2/avro/AvroLazyObjectInspector.java#L347]
> condition returns false for {*}Timestamp{*}, preventing the conversion of
> *Timestamp* to *LazyTimestamp*
> [here|https://github.com/apache/hive/blob/53009126f6fe7ccf24cf052fd6c156542f38b19d/serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazyFactory.java#L132].
> The solution is to return {{true}} for Timestamps in the {{isPrimitive}}
> method.
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