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https://issues.apache.org/jira/browse/HIVE-15082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15643658#comment-15643658
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Oleksiy Sayankin commented on HIVE-15082:
-----------------------------------------
[~vgumashta], I have already attached the patch with name
*HIVE-15082-branch-1.2.patch* according to pattern
HIVE-<JIRA-NUMBER>[.<patch-num>][-<branch-name>].patch
For some reason it gave no effect and patch is not applied. So if you know what
is wrong here with patch name and how to fix it, please advise.
> Hive-1.2 cannot read data from complex data types with TIMESTAMP column,
> stored in Parquet
> ------------------------------------------------------------------------------------------
>
> Key: HIVE-15082
> URL: https://issues.apache.org/jira/browse/HIVE-15082
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.2.0
> Reporter: Oleksiy Sayankin
> Assignee: Oleksiy Sayankin
> Priority: Blocker
> Attachments: HIVE-15082-branch-1.2.patch, HIVE-15082-branch-1.patch
>
>
> *STEP 1. Create test data*
> {code:sql}
> select * from dual;
> {code}
> *EXPECTED RESULT:*
> {noformat}
> Pretty_UnIQUe_StrinG
> {noformat}
> {code:sql}
> create table test_parquet1(login timestamp) stored as parquet;
> insert overwrite table test_parquet1 select from_unixtime(unix_timestamp())
> from dual;
> select * from test_parquet1 limit 1;
> {code}
> *EXPECTED RESULT:*
> No exceptions. Current timestamp as result.
> {noformat}
> 2016-10-27 10:58:19
> {noformat}
> *STEP 2. Store timestamp in array in parquet file*
> {code:sql}
> create table test_parquet2(x array<timestamp>) stored as parquet;
> insert overwrite table test_parquet2 select array(login) from test_parquet1;
> select * from test_parquet2;
> {code}
> *EXPECTED RESULT:*
> No exceptions. Current timestamp in brackets as result.
> {noformat}
> ["2016-10-27 10:58:19"]
> {noformat}
> *ACTUAL RESULT:*
> {noformat}
> ERROR [main]: CliDriver (SessionState.java:printError(963)) - Failed with
> exception java.io.IOException:parquet.io.ParquetDecodingException: Can not
> read value at 0 in block -1 in file
> hdfs:///user/hive/warehouse/test_parquet2/000000_0
> java.io.IOException: parquet.io.ParquetDecodingException: Can not read value
> at 0 in block -1 in file hdfs:///user/hive/warehouse/test_parquet2/000000_0
> {noformat}
> *ROOT-CAUSE:*
> Incorrect initialization of {{metadata}} {{HashMap}} causes that it has
> {{null}} value in enumeration
> {{org.apache.hadoop.hive.ql.io.parquet.convert.ETypeConverter}} when
> executing following line:
> {code:java}
> boolean skipConversion =
> Boolean.valueOf(metadata.get(HiveConf.ConfVars.HIVE_PARQUET_TIMESTAMP_SKIP_CONVERSION.varname));
> {code}
> in element {{ETIMESTAMP_CONVERTER}}.
> JVM throws NPE and parquet library can not read data from file and throws
> {noformat}
> java.io.IOException:parquet.io.ParquetDecodingException: Can not read value
> at 0 in block -1 in file hdfs:///user/hive/warehouse/test_parquet2/000000_0
> {noformat}
> for its turn.
> *SOLUTION:*
> Perform initialization in separate method to skip overriding it with {{null}}
> value in block of code
> {code:java}
> if (parent != null) {
> setMetadata(parent.getMetadata());
> }
> {code}
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