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From "Aman Sinha (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-4734) Query against HBase table on a 5 node cluster fails with SchemaChangeException
Date Tue, 21 Jun 2016 14:15:58 GMT

     [ https://issues.apache.org/jira/browse/DRILL-4734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aman Sinha updated DRILL-4734:
------------------------------
    Attachment: 5nodes.explain.txt

Attached Explain plan with 5 nodes

> Query against HBase table on a 5 node cluster fails with SchemaChangeException
> ------------------------------------------------------------------------------
>
>                 Key: DRILL-4734
>                 URL: https://issues.apache.org/jira/browse/DRILL-4734
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Relational Operators, Storage - HBase
>    Affects Versions: 1.6.0
>            Reporter: Aman Sinha
>         Attachments: 2nodes.explain.txt, 5nodes.explain.txt
>
>
> [Creating this JIRA on behalf of Qiang Li]
> Let say I have two tables.
> {noformat}
> offers_ref0 : rowkey salt(1byte)+long uid(8 byte ) , family: v,  qualifier:
> v(string)
> offers_nation_idx: rowkey salt(1byte) + string, family:v, qualifier: v(long
> 8 byte)
> {noformat}
> there is the SQL:
> {noformat}
> select CONVERT_FROM(BYTE_SUBSTR(`ref0`.row_key,-8,8),'BIGINT_BE') as did, 
>    convert_from(`ref0`.`v`.`v`,'UTF8') as v  from hbase.`offers_nation_idx` as`nation`

>     join hbase.offers_ref0 as `ref0` 
>     on CONVERT_FROM(BYTE_SUBSTR(`ref0`.row_key,-8,8),'BIGINT_BE') = 
>          CONVERT_FROM(nation.`v`.`v`,'BIGINT_BE') 
>    where `nation`.row_key  > '0br' and `nation`.row_key  < '0bs' 
>  limit 10
> {noformat}
> When I execute the query with single node or less than 5 nodes, its working
> good. But when I execute it in cluster which have about 14 nodes, its throw
> a exception:
> First time will throw this exception:
> *Caused by: java.sql.SQLException: SYSTEM ERROR: SchemaChangeException:
> Hash join does not support schema changes*
> Then if I query again, it will always throw below exception:
> {noformat}
> *Query Failed: An Error Occurred*
> *org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR:IllegalStateException:

> Failure while reading vector. Expected vector class of org.apache.drill.exec.vector.NullableIntVector
but 
> was holding vector class org.apache.drill.exec.vector.complex.MapVector, field=v(MAP:REQUIRED
>  [v(VARBINARY:OPTIONAL)[$bits$(UINT1:REQUIRED),
> v(VARBINARY:OPTIONAL)[$offsets$(UINT4:REQUIRED)]]] Fragment 12:4
>  [Error Id:06c6eae4-0822-4714-b0bf-a6e04ebfec79 on xxx:31010]*
> {noformat}



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