[jira] [Resolved] (TAJO-585) TajoCli prints unexpected results in simple union query.

["Jaehwa Jung (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TAJO-585?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jaehwa Jung resolved TAJO-585.
------------------------------

    Resolution: Cannot Reproduce

We can't reproduce this bug again.

> TajoCli prints unexpected results in simple union query.
> --------------------------------------------------------
>
>                 Key: TAJO-585
>                 URL: https://issues.apache.org/jira/browse/TAJO-585
>             Project: Tajo
>          Issue Type: Bug
>          Components: query master
>            Reporter: Jaehwa Jung
>            Assignee: Jaehwa Jung
>         Attachments: TAJO-585.patch, TAJO-585.patch, TAJO-585_2.patch
>
>
> I found a bug which TajoCli prints unexpected results in union query.
> For the first, TajoCli prints wrong row numbers as follows:
> {code:xml}
> tajo> select id from table1 union all select id from table2;
> result: hdfs://localhost:9010/tmp/tajo-blrunner/staging/q_1391680780275_0004/RESULT, 5 rows (21 B)
> id
> -------------------------------
> 6
> 7
> 8
> 9
> 10
> 1
> 2
> 3
> 4
> 5
> {code}
> And if empty table located on last phase, it just prints zero as follows:
> {code:xml}
> tajo> select id from table1 union all select id from table3;
> result: hdfs://localhost:9010/tmp/tajo-blrunner/staging/q_1391680780275_0005/RESULT, 0 rows (10 B)
> id
> -------------------------------
> {code}
> For reference, I created test tables as follows:
> {code:xml}
> CREATE EXTERNAL TABLE table1 (id INT4, name TEXT, score FLOAT4, type TEXT) USING CSV WITH ('csvfile.delimiter'='|') LOCATION 'hdfs://localhost:9010/tajo/warehouse/table1';
> CREATE EXTERNAL TABLE table2 (id INT4, name TEXT, score FLOAT4, type TEXT) USING CSV WITH ('csvfile.delimiter'='|') LOCATION 'hdfs://localhost:9010/tajo/warehouse/table2';
> CREATE EXTERNAL TABLE table3 (id INT4, name TEXT, score FLOAT4, type TEXT) USING CSV WITH ('csvfile.delimiter'='|') LOCATION 'hdfs://localhost:9010/tajo/warehouse/table3';
> tajo> select * from table1;
> result: hdfs://localhost:9010/tmp/tajo-blrunner/staging/q_1391680780275_0001/RESULT, 5 rows (60 B)
> id,  name,  score,  type
> -------------------------------
> 1,  ooo,  1.1,  a
> 2,  ppp,  2.3,  b
> 3,  qqq,  3.4,  c
> 4,  rrr,  4.5,  d
> 5,  xxx,  5.6,  e
> tajo> select * from table2;
> result: hdfs://localhost:9010/tmp/tajo-blrunner/staging/q_1391680780275_0002/RESULT, 5 rows (61 B)
> id,  name,  score,  type
> -------------------------------
> 6,  ooo,  1.1,  a
> 7,  ppp,  2.3,  b
> 8,  qqq,  3.4,  c
> 9,  rrr,  4.5,  d
> 10,  xxx,  5.6,  e
> tajo> select * from table3;
> result: hdfs://localhost:9010/tmp/tajo-blrunner/staging/q_1391680780275_0003/RESULT, 0 rows (0 B)
> id,  name,  score,  type
> -------------------------------
> {code}



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