Hi folks,

I’m working on a project where GeoServer is serving up a mosaic of Geotiffs
and I’m running into some issues.

First off, the server is running version 2.8.0 and the mosaic renders but
when zooming into higher resolutions ImageWorker starts to throw
exceptions. Here is the stack trace, which seems to be a simple index out
of bounds exception:


https://gist.github.com/jdeolive/21578d8307659ea88d96#file-2-8-0-stack-trace

So my first inclination was to upgrade to the latest 2.8.x, and when
looking at that line of code I noticed that it had been addressed. But when
I deploy the 2.8.x snapshot the mosaic no longer renders at all, with the
following exception:


https://gist.github.com/jdeolive/21578d8307659ea88d96#file-2-8-x-stack-trace

So… for now what I’ve done is reverted back to 2.8.0 but back ported the
patch that adds the size check:


https://gist.github.com/jdeolive/21578d8307659ea88d96#file-imageworker-java

And with that the mosaic renders, at all zooms.

Not sure if it is a configuration issue on my end or a bug but thought I
would post here first. The raster masters can let me know if they want me
to throw this into a bug report.

Some additional info:

gdalinfo on one of the mosaic tiles:

  https://gist.github.com/jdeolive/21578d8307659ea88d96#file-gdalinfo

System info:

- Linux 64 bit
- Oracle Java 7 / Tomcat 7 with native JAI extensions installed

Let me know if I can provide any more info.

-Justin
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