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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-13872) Vectorization: Fix cross-product reduce sink serialization
Date Thu, 23 Jun 2016 04:04:16 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt McCline updated HIVE-13872:
--------------------------------
    Attachment:     (was: HIVE-13872.05.patch)

> Vectorization: Fix cross-product reduce sink serialization
> ----------------------------------------------------------
>
>                 Key: HIVE-13872
>                 URL: https://issues.apache.org/jira/browse/HIVE-13872
>             Project: Hive
>          Issue Type: Bug
>          Components: Vectorization
>    Affects Versions: 2.1.0
>            Reporter: Gopal V
>            Assignee: Matt McCline
>         Attachments: HIVE-13872.01.patch, HIVE-13872.02.patch, HIVE-13872.03.patch, HIVE-13872.04.patch,
HIVE-13872.05.patch, HIVE-13872.WIP.patch, customer_demographics.txt, vector_include_no_sel.q,
vector_include_no_sel.q.out
>
>
> TPC-DS Q13 produces a cross-product without CBO simplifying the query
> {code}
> Caused by: java.lang.RuntimeException: null STRING entry: batchIndex 0 projection column
num 1
>         at org.apache.hadoop.hive.ql.exec.vector.VectorExtractRow.nullBytesReadError(VectorExtractRow.java:349)
>         at org.apache.hadoop.hive.ql.exec.vector.VectorExtractRow.extractRowColumn(VectorExtractRow.java:267)
>         at org.apache.hadoop.hive.ql.exec.vector.VectorExtractRow.extractRow(VectorExtractRow.java:343)
>         at org.apache.hadoop.hive.ql.exec.vector.VectorReduceSinkOperator.process(VectorReduceSinkOperator.java:103)
>         at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:837)
>         at org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:130)
>         at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:762)
>         ... 18 more
> {code}
> Simplified query
> {code}
> set hive.cbo.enable=false;
> -- explain
> select count(1)  
>  from store_sales
>      ,customer_demographics
>  where (
> ( 
>   customer_demographics.cd_demo_sk = store_sales.ss_cdemo_sk
>   and customer_demographics.cd_marital_status = 'M'
>      )or
>      (
>    customer_demographics.cd_demo_sk = ss_cdemo_sk
>   and customer_demographics.cd_marital_status = 'U'
>      ))
> ;
> {code}
> {code}
>         Map 3 
>             Map Operator Tree:
>                 TableScan
>                   alias: customer_demographics
>                   Statistics: Num rows: 1920800 Data size: 717255532 Basic stats: COMPLETE
Column stats: NONE
>                   Reduce Output Operator
>                     sort order: 
>                     Statistics: Num rows: 1920800 Data size: 717255532 Basic stats: COMPLETE
Column stats: NONE
>                     value expressions: cd_demo_sk (type: int), cd_marital_status (type:
string)
>             Execution mode: vectorized, llap
>             LLAP IO: all inputs
> {code}



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