From 7852dd159631a9c730e924e8242398a7bd8242a8 Mon Sep 17 00:00:00 2001 From: Lisa Owen Date: Mon, 20 Nov 2017 14:24:15 -0800 Subject: [PATCH] docs - note that pxf does note yet support filter pushdown (#3937) --- gpdb-doc/dita/admin_guide/external/pxf-overview.xml | 1 + 1 file changed, 1 insertion(+) diff --git a/gpdb-doc/dita/admin_guide/external/pxf-overview.xml b/gpdb-doc/dita/admin_guide/external/pxf-overview.xml index 329e05c94c..10bc71887c 100644 --- a/gpdb-doc/dita/admin_guide/external/pxf-overview.xml +++ b/gpdb-doc/dita/admin_guide/external/pxf-overview.xml @@ -5,6 +5,7 @@ Data managed by your organization may already reside in external sources. The Greenplum Platform Extension Framework (PXF) provides access to this external data via built-in connectors that map an external data source to a Greenplum Database table definition.

PXF is installed with HDFS, Hive, and HBase connectors. These connectors enable you to read external HDFS file system and Hive and HBase table data stored in text, Avro, JSON, RCFile, Parquet, SequenceFile, and ORC formats.

+ PXF does not currently support filter predicate pushdown in the HDFS, Hive, and HBase connectors.

The Greenplum Platform Extension Framework includes a protocol C library and a Java service. After you configure and initialize PXF, you start a single PXF JVM process on each Greenplum Database segment host. This long-running process concurrently serves multiple query requests.

For detailed information about the architecture of and using PXF, refer to the Using PXF with External Data documentation.

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