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https://issues.apache.org/jira/browse/HIVE-4561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13676561#comment-13676561
]
Ashutosh Chauhan commented on HIVE-4561:
----------------------------------------
Now, {{columnstats_tbllvl.q}} failed with following exception:
{code}
[junit] java.lang.NullPointerException
[junit] at
org.apache.hadoop.hive.serde2.lazy.objectinspector.primitive.LazyLongObjectInspector.get(LazyLongObjectInspector.java:38)
[junit] at
org.apache.hadoop.hive.ql.exec.ColumnStatsTask.unpackLongStats(ColumnStatsTask.java:126)
[junit] at
org.apache.hadoop.hive.ql.exec.ColumnStatsTask.unpackPrimitiveObject(ColumnStatsTask.java:196)
[junit] at
org.apache.hadoop.hive.ql.exec.ColumnStatsTask.unpackStructObject(ColumnStatsTask.java:224)
[junit] at
org.apache.hadoop.hive.ql.exec.ColumnStatsTask.constructColumnStatsFromPackedRow(ColumnStatsTask.java:263)
[junit] at
org.apache.hadoop.hive.ql.exec.ColumnStatsTask.persistTableStats(ColumnStatsTask.java:327)
[junit] at
org.apache.hadoop.hive.ql.exec.ColumnStatsTask.execute(ColumnStatsTask.java:343)
[junit] at
org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:145)
[junit] at
org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:65)
[junit] at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1355)
[junit] at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1139)
[junit] at org.apache.hadoop.hive.ql.Driver.run(Driver.java:945)
[junit] at
org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:259)
[junit] at
org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)
[junit] at
org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:413)
[junit] at
org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:348)
[junit] at
org.apache.hadoop.hive.ql.QTestUtil.executeClient(QTestUtil.java:790)
[junit] at
org.apache.hadoop.hive.cli.TestCliDriver.runTest(TestCliDriver.java:6279)
[junit] at
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_columnstats_tbllvl(TestCliDriver.java:1971)
{code}
> Column stats : LOW_VALUE (or HIGH_VALUE) will always be 0.0000 ,if all the
> column values larger than 0.0 (or if all column values smaller than 0.0)
> ----------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-4561
> URL: https://issues.apache.org/jira/browse/HIVE-4561
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Affects Versions: 0.12.0
> Reporter: caofangkun
> Assignee: Zhuoluo (Clark) Yang
> Attachments: HIVE-4561.1.patch, HIVE-4561.2.patch, HIVE-4561.3.patch,
> HIVE-4561.4.patch
>
>
> if all column values larger than 0.0 DOUBLE_LOW_VALUE always will be 0.0
> or if all column values less than 0.0, DOUBLE_HIGH_VALUE will always be
> hive (default)> create table src_test (price double);
> hive (default)> load data local inpath './test.txt' into table src_test;
> hive (default)> select * from src_test;
> OK
> 1.0
> 2.0
> 3.0
> Time taken: 0.313 seconds, Fetched: 3 row(s)
> hive (default)> analyze table src_test compute statistics for columns price;
> mysql> select * from TAB_COL_STATS \G;
> CS_ID: 16
> DB_NAME: default
> TABLE_NAME: src_test
> COLUMN_NAME: price
> COLUMN_TYPE: double
> TBL_ID: 2586
> LONG_LOW_VALUE: 0
> LONG_HIGH_VALUE: 0
> DOUBLE_LOW_VALUE: 0.0000 # Wrong Result ! Expected is 1.0000
> DOUBLE_HIGH_VALUE: 3.0000
> BIG_DECIMAL_LOW_VALUE: NULL
> BIG_DECIMAL_HIGH_VALUE: NULL
> NUM_NULLS: 0
> NUM_DISTINCTS: 1
> AVG_COL_LEN: 0.0000
> MAX_COL_LEN: 0
> NUM_TRUES: 0
> NUM_FALSES: 0
> LAST_ANALYZED: 1368596151
> 2 rows in set (0.00 sec)
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