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https://issues.apache.org/jira/browse/HIVE-23133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhenyu Zheng updated HIVE-23133:
--------------------------------
Description:
Currently, we have set up an ARM CI to test out how Hive works on ARM platform:
[https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/]
Among the failures, we have observed that some numeric operations can have
different result across hardware archs, such as:
[https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/25/testReport/org.apache.hadoop.hive.cli/TestCliDriver/testCliDriver_vector_decimal_udf2_/]
[https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/25/testReport/org.apache.hadoop.hive.cli/TestSparkCliDriver/testCliDriver_subquery_select_/]
[https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/25/testReport/org.apache.hadoop.hive.cli/TestSparkCliDriver/testCliDriver_vectorized_math_funcs_/]
we can see that the calculation results of log, exp, cos, toRadians etc is
slitly different than the .out file results that we are
comparing(they are tested and wrote on X86 machines), this is because of we use
[Math Library|https://docs.oracle.com/javase/6/docs/api/java/lang/Math.html]
> Numeric operations can have different result across hardware archs
> ------------------------------------------------------------------
>
> Key: HIVE-23133
> URL: https://issues.apache.org/jira/browse/HIVE-23133
> Project: Hive
> Issue Type: Bug
> Reporter: Zhenyu Zheng
> Priority: Major
>
> Currently, we have set up an ARM CI to test out how Hive works on ARM
> platform:
> [https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/]
> Among the failures, we have observed that some numeric operations can have
> different result across hardware archs, such as:
> [https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/25/testReport/org.apache.hadoop.hive.cli/TestCliDriver/testCliDriver_vector_decimal_udf2_/]
> [https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/25/testReport/org.apache.hadoop.hive.cli/TestSparkCliDriver/testCliDriver_subquery_select_/]
> [https://builds.apache.org/view/H-L/view/Hive/job/Hive-linux-ARM-trunk/25/testReport/org.apache.hadoop.hive.cli/TestSparkCliDriver/testCliDriver_vectorized_math_funcs_/]
> we can see that the calculation results of log, exp, cos, toRadians etc is
> slitly different than the .out file results that we are
> comparing(they are tested and wrote on X86 machines), this is because of we
> use [Math
> Library|https://docs.oracle.com/javase/6/docs/api/java/lang/Math.html]
>
>
>
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