Devin Jia created HAWQ-779:
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Summary: support more pxf filter pushdwon
Key: HAWQ-779
URL: https://issues.apache.org/jira/browse/HAWQ-779
Project: Apache HAWQ
Issue Type: Improvement
Components: PXF
Reporter: Devin Jia
Assignee: Goden Yao
When I use the pxf hawq, I need to read a traditional relational database
systems and solr by way of the external table. The project
:https://github.com/Pivotal-Field-Engineering/pxf-field/tree/master/jdbc-pxf-ext,
only "WriteAccessor ",so I developed 2 plug-ins, the projects: https:
//github.com/inspur-insight/pxf-plugin. But these two plug-ins need to modified
HAWQ:
1. When get a list of fragment from pxf services, push down the 'filterString'.
modify the backend / optimizer / plan / createplan.c of create_pxf_plan methods:
segdb_work_map = map_hddata_2gp_segments (uri_str,
total_segs, segs_participating,
relation, ctx-> root-> parse-> jointree-> quals);
2. modify pxffilters.h and pxffilters.c, support TEXT types LIKE operation,
Date type data operator, Float type operator.
3. Modify org.apache.hawq.pxf.api.FilterParser.java, support the LIKE operator.
I already created a feature branch in my local ,and tested.
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