apex-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXMALHAR-2330) JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL driver
Date Wed, 09 Nov 2016 13:47:58 GMT

    [ https://issues.apache.org/jira/browse/APEXMALHAR-2330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15650969#comment-15650969
] 

ASF GitHub Bot commented on APEXMALHAR-2330:
--------------------------------------------

GitHub user deepak-narkhede opened a pull request:

    https://github.com/apache/apex-malhar/pull/489

    APEXMALHAR-2330 JdbcPOJOPollInputOperator fails with NullPointerExcep…

    **Problem:** 
    JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL driver.
    
    **Problem Description:**
    1) When JdbcPOJOPollInputOperator tries to populateColumnDataTypes, column names retrieved
from resultmetadata from database ( this case : Postgres) are all lowercase.
    2) Whereas columnDatatypes specified in fieldinfos might be in same case.
    3) Internally hashmap ( nameToType) is used which mismatches if column name and fieldinfo
are not in same case. Hence columnDataTypes is empty which causes null exception in activate
call.
    
    **Solution:**
    Using similar case for hashmap and column names irrespective of any database used for
JdbcPOJOPollInputOperator.
    
    **Testing:**
    Tested with Database-to-hdfs app also with instrumented logs.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/deepak-narkhede/apex-malhar APEXMALHAR-2330

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/apex-malhar/pull/489.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #489
    
----
commit 58812c41bcff437db97853e5c5b628a9f9f5dbc4
Author: deepak-narkhede <mailtodeepakn@gmail.com>
Date:   2016-11-09T13:37:10Z

    APEXMALHAR-2330 JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL
driver.
    
    Using similar case for hashmap and column names irrespective of any database used for
JdbcPOJOPollInputOperator.

----


> JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL driver
> --------------------------------------------------------------------------------
>
>                 Key: APEXMALHAR-2330
>                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-2330
>             Project: Apache Apex Malhar
>          Issue Type: Bug
>            Reporter: Deepak Narkhede
>            Assignee: Deepak Narkhede
>
> Here is the description:
> Problem: 
> JdbcPOJOPollInputOperator fails with NullPointerException when PostgreSQL driver.
> Problem Description:
> 1) When JdbcPOJOPollInputOperator tries to populateColumnDataTypes, column names retrieved
from resultmetadata from database ( this case : Postgres) are all lowercase.
> 2) Whereas columnDatatypes specified in fieldinfos might be in same case.
> 3) Internally hashmap ( nameToType) is used which mismatches if column name and fieldinfo
are not in same case. Hence columnDataTypes is empty which causes null exception in activate
call.
> Proposed Solution:
> Using similar case for hashmap and column names irrespective of any database used for
JdbcPOJOPollInputOperator.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message