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https://issues.apache.org/jira/browse/HIVE-15082?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vaibhav Gumashta updated HIVE-15082:
------------------------------------
Priority: Blocker (was: Major)
> 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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