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https://issues.apache.org/jira/browse/HIVE-2272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13082745#comment-13082745
 ] 

jirapos...@reviews.apache.org commented on HIVE-2272:
-----------------------------------------------------



bq.  On 2011-08-10 21:30:23, Ashutosh Chauhan wrote:
bq.  > 
trunk/serde/src/java/org/apache/hadoop/hive/serde2/io/TimestampWritable.java, 
line 134
bq.  > <https://reviews.apache.org/r/1135/diff/6/?file=31093#file31093line134>
bq.  >
bq.  >     I think you want Arrays.equals() there.

currentBytes always points to the correct byte[], if any, so in this case I 
want to compare the pointers to check whether we are using externalBytes to 
hold the data.


bq.  On 2011-08-10 21:30:23, Ashutosh Chauhan wrote:
bq.  > 
trunk/serde/src/java/org/apache/hadoop/hive/serde2/io/TimestampWritable.java, 
lines 73-74
bq.  > <https://reviews.apache.org/r/1135/diff/6/?file=31093#file31093line73>
bq.  >
bq.  >     Do we really need two booleans? It seems at a time data will be 
either in byte[] or in timestamp, so one bool will suffice?

We may have conditions when the data is in both the byte[] and timestamp (ex: 
needed to instantiate timestamp object from byte[] to get the string 
representation) so with two booleans we can make sure we don't do repeated work 
if there are repeated calls.


- Franklin


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On 2011-08-08 18:19:27, Franklin Hu wrote:
bq.  
bq.  -----------------------------------------------------------
bq.  This is an automatically generated e-mail. To reply, visit:
bq.  https://reviews.apache.org/r/1135/
bq.  -----------------------------------------------------------
bq.  
bq.  (Updated 2011-08-08 18:19:27)
bq.  
bq.  
bq.  Review request for hive, Yongqiang He, Ning Zhang, and Siying Dong.
bq.  
bq.  
bq.  Summary
bq.  -------
bq.  
bq.  Adds TIMESTAMP type to serde2 with both string (LazySimple) and binary 
(LazyBinary) serialization.
bq.  Supports SQL style jdbc timestamps of the format with nanosecond precision
bq.  YYYY-MM-DD HH:MM:SS[.fff...]
bq.  
bq.  
bq.  This addresses bug HIVE-2272.
bq.      https://issues.apache.org/jira/browse/HIVE-2272
bq.  
bq.  
bq.  Diffs
bq.  -----
bq.  
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFDateDiff.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFDateAdd.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java 
1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/DDLSemanticAnalyzer.java 
1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/ErrorMsg.java 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/TypeCheckProcFactory.java 
1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFDate.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFDateSub.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFDayOfMonth.java 
1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFHour.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFMinute.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFMonth.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFSecond.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToBoolean.java 
1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToByte.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToDouble.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToFloat.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToInteger.java 
1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToLong.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToShort.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFToString.java 1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFUnixTimeStamp.java 
1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFWeekOfYear.java 
1155026 
bq.    trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFYear.java 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFAverage.java 
1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFContextNGrams.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFCorrelation.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFCovariance.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFCovarianceSample.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFHistogramNumeric.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFPercentileApprox.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFStd.java 
1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFStdSample.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFSum.java 
1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFVariance.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFVarianceSample.java
 1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDAFnGrams.java 
1155026 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFFromUtcTimestamp.java
 PRE-CREATION 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFTimestamp.java
 PRE-CREATION 
bq.    
trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFToUtcTimestamp.java
 PRE-CREATION 
bq.    trunk/ql/src/test/queries/clientnegative/invalid_t_create3.q 1155026 
bq.    trunk/ql/src/test/queries/clientpositive/timestamp_1.q PRE-CREATION 
bq.    trunk/ql/src/test/queries/clientpositive/timestamp_2.q PRE-CREATION 
bq.    trunk/ql/src/test/queries/clientpositive/timestamp_3.q PRE-CREATION 
bq.    trunk/ql/src/test/queries/clientpositive/timestamp_comparison.q 
PRE-CREATION 
bq.    trunk/ql/src/test/queries/clientpositive/timestamp_udf.q PRE-CREATION 
bq.    trunk/ql/src/test/results/clientnegative/invalid_create_tbl1.q.out 
1155026 
bq.    trunk/ql/src/test/results/clientnegative/invalid_t_alter1.q.out 1155026 
bq.    trunk/ql/src/test/results/clientnegative/invalid_t_alter2.q.out 1155026 
bq.    trunk/ql/src/test/results/clientnegative/invalid_t_create1.q.out 1155026 
bq.    trunk/ql/src/test/results/clientnegative/invalid_t_create2.q.out 1155026 
bq.    trunk/ql/src/test/results/clientnegative/invalid_t_transform.q.out 
1155026 
bq.    trunk/ql/src/test/results/clientnegative/wrong_column_type.q.out 1155026 
bq.    trunk/ql/src/test/results/clientpositive/show_functions.q.out 1155026 
bq.    trunk/ql/src/test/results/clientpositive/timestamp_1.q.out PRE-CREATION 
bq.    trunk/ql/src/test/results/clientpositive/timestamp_2.q.out PRE-CREATION 
bq.    trunk/ql/src/test/results/clientpositive/timestamp_3.q.out PRE-CREATION 
bq.    trunk/ql/src/test/results/clientpositive/timestamp_comparison.q.out 
PRE-CREATION 
bq.    trunk/ql/src/test/results/clientpositive/timestamp_udf.q.out 
PRE-CREATION 
bq.    trunk/serde/src/java/org/apache/hadoop/hive/serde2/SerDeUtils.java 
1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/binarysortable/BinarySortableSerDe.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/io/TimestampWritable.java 
PRE-CREATION 
bq.    trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazyFactory.java 
1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazyTimestamp.java 
PRE-CREATION 
bq.    trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazy/LazyUtils.java 
1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazy/objectinspector/primitive/LazyPrimitiveObjectInspectorFactory.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazy/objectinspector/primitive/LazyTimestampObjectInspector.java
 PRE-CREATION 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazybinary/LazyBinaryFactory.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazybinary/LazyBinarySerDe.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazybinary/LazyBinaryTimestamp.java
 PRE-CREATION 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/lazybinary/LazyBinaryUtils.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/ObjectInspectorConverters.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/ObjectInspectorUtils.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/PrimitiveObjectInspector.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/JavaTimestampObjectInspector.java
 PRE-CREATION 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/PrimitiveObjectInspectorConverter.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/PrimitiveObjectInspectorFactory.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/PrimitiveObjectInspectorUtils.java
 1155026 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/SettableTimestampObjectInspector.java
 PRE-CREATION 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/TimestampObjectInspector.java
 PRE-CREATION 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/primitive/WritableTimestampObjectInspector.java
 PRE-CREATION 
bq.    
trunk/serde/src/java/org/apache/hadoop/hive/serde2/typeinfo/TypeInfoFactory.java
 1155026 
bq.  
bq.  Diff: https://reviews.apache.org/r/1135/diff
bq.  
bq.  
bq.  Testing
bq.  -------
bq.  
bq.  Wrote some unit tests for string/binary serialization. Also ran against 
test data and looked consistent
bq.  
bq.  
bq.  Thanks,
bq.  
bq.  Franklin
bq.  
bq.



> add TIMESTAMP data type
> -----------------------
>
>                 Key: HIVE-2272
>                 URL: https://issues.apache.org/jira/browse/HIVE-2272
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Franklin Hu
>            Assignee: Franklin Hu
>             Fix For: 0.8.0
>
>         Attachments: hive-2272.1.patch, hive-2272.10.patch, 
> hive-2272.2.patch, hive-2272.3.patch, hive-2272.4.patch, hive-2272.5.patch, 
> hive-2272.6.patch, hive-2272.7.patch, hive-2272.8.patch, hive-2272.9.patch
>
>
> Add TIMESTAMP type to serde2 that supports unix timestamp (1970-01-01 
> 00:00:01 UTC to 2038-01-19 03:14:07 UTC) with optional nanosecond precision 
> using both LazyBinary and LazySimple SerDes. 
> For LazySimpleSerDe, the data is stored in jdbc compliant java.sql.Timestamp 
> parsable strings.

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