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https://issues.apache.org/jira/browse/HIVE-22224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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cdmikechen updated HIVE-22224:
------------------------------
Description:
When user create an external table and import a parquet-avro data with 1.8.2
version which supported logical_type in Hive2.3 or before version, Hive can not
read timestamp type column data correctly.
Hive will read it as LongWritable which it actually stores as
long(logical_type=timestamp-millis).So we may add some codes in
org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableTimestampObjectInspector.java
to let Hive cast long type to timestamp type.
Some code like below:
public Timestamp getPrimitiveJavaObject(Object o) {
if (o instanceof LongWritable) {
return new Timestamp(((LongWritable) o).get());
}
return o == null ? null : ((TimestampWritable) o).getTimestamp();
}
was:
When user create an external table and import a parquet-avro data with 1.8.2
version which supported logical_type in Hive2.3 or before version, Hive can not
read timestamp type column data correctly.
Hive will read it as LongWritable which it actually stores as
long(logical_type=timestamp-millis).So we may add some codes in
org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableTimestampObjectInspector.java
to let Hive cast long type to timestamp type.
Some code like below:
public Timestamp getPrimitiveJavaObject(Object o) {
if (o instanceof LongWritable) {
return new Timestamp(((LongWritable) o).get());
}
return o == null ? null : ((TimestampWritable) o).getTimestamp();
}
> Support Parquet-Avro Timestamp Type
> -----------------------------------
>
> Key: HIVE-22224
> URL: https://issues.apache.org/jira/browse/HIVE-22224
> Project: Hive
> Issue Type: Bug
> Components: Database/Schema
> Affects Versions: 2.3.5, 2.3.6
> Reporter: cdmikechen
> Priority: Major
> Labels: parquet
> Fix For: 2.3.7
>
>
> When user create an external table and import a parquet-avro data with 1.8.2
> version which supported logical_type in Hive2.3 or before version, Hive can
> not read timestamp type column data correctly.
> Hive will read it as LongWritable which it actually stores as
> long(logical_type=timestamp-millis).So we may add some codes in
> org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableTimestampObjectInspector.java
> to let Hive cast long type to timestamp type.
> Some code like below:
>
> public Timestamp getPrimitiveJavaObject(Object o) {
> if (o instanceof LongWritable) {
> return new Timestamp(((LongWritable) o).get());
> }
> return o == null ? null : ((TimestampWritable) o).getTimestamp();
> }
>
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