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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/30337/
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(Updated Jan. 27, 2015, 11:07 p.m.)
Review request for hive and Brock Noland.
Bugs: HIVE-9482
https://issues.apache.org/jira/browse/HIVE-9482
Repository: hive-git
Description
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In current Hive implementation, timestamps are stored in UTC (converted from
current timezone), based on original parquet timestamp spec.
However, we find this is not compatibility with other tools, and after some
investigation it is not the way of the other file formats, or even some
databases (Hive Timestamp is more equivalent of 'timestamp without timezone'
datatype).
This is the first part of the fix, which will restore compatibility with
parquet-timestamp files generated by external tools by skipping conversion on
reading.
Later fix will change the write path to not convert, and stop the
read-conversion even for files written by Hive itself.
Diffs
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common/src/java/org/apache/hadoop/hive/conf/HiveConf.java 64e7e0a
data/files/parquet_external_time.parq PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/ConverterParent.java
a86d6f4
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/DataWritableRecordConverter.java
000e8ea
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/ETypeConverter.java
23bb364
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/HiveCollectionConverter.java
872900b
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/HiveGroupConverter.java
11772be
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/HiveStructConverter.java
eeb3838
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/Repeated.java
af28b4c
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/read/DataWritableReadSupport.java
3f8e4d7
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/read/ParquetRecordReaderWrapper.java
4e4d7fd
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/timestamp/NanoTimeUtils.java
c647b24
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/write/DataWritableWriter.java
41b5f1c
ql/src/test/org/apache/hadoop/hive/ql/io/parquet/serde/TestParquetTimestampUtils.java
2e788bd
ql/src/test/queries/clientpositive/parquet_external_time.q PRE-CREATION
ql/src/test/results/clientpositive/parquet_external_time.q.out PRE-CREATION
Diff: https://reviews.apache.org/r/30337/diff/
Testing
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Added new unit tests (TestParquetTimestampUtils) to test non-conversion
code-path.
Also added new q-test, to read a parquet timestamp-file generated by an
external tool, in this case Impala.
Thanks,
Szehon Ho
