FeatureReader - Initial memory consumption problem

Description

I already created a question at GIS Stackexchange for this topic.

I am using a (JDBC-) FeatureReader to access features from a PostGis source.
The table contains ~1.150.000 features. I updated the Geotools version from 2.4.5 to 18.2.

The FeatureReader using GT version 18.2 initially allocates ~800MB memory (for ~1.150.000 features) which is a lot more than ~50MB using the older GT version 2.4.5.

The problem is the initial memory consumption when creating (and holding) the FeatureReader. I made the following observations:

  • The memory consumption is growing with the number of requested features.

  • The memory consumption decreases after features are read and the reader is closed (no GC problem).

  • In both cases the used FeatureReader class is org.geotools.jdbc.JDBCFeatureReader

I do not want to load the features into memory. Is this a bug or are there ways to make the FeatureReader more performant using newer versions (> 18) of Geotools?

Environment

None

Status

Assignee

Unassigned

Reporter

Lars S

Triage

Components

Affects versions

Priority

Medium
Configure