On Mon, 29 Jul 2013, Chris Bamford wrote:
I am running into OOM issues when trying to handle powerpoint files containing large sound and image files. The problem occurs during the constructor phase as it appears to attempt to load all files into memory at once.
HSLF is DOM-like. However, it should only need a few times the size of the file to process it in, especially if you load it from a NPOIFSFileSystem created from a File rather than an InputStream
Are you able to bump up your heap size a lot so it loads, then use a profiler to track down which bits are using all the memory? It's possible that one or two large bits could be converted to lazy-loading or something like that, to reduce the footprint
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