Minor Description
As seen on tika-dev@ and in JCR-2576, there are some InputStream implementations that claim to support the mark feature, but lose the mark as soon as the end of stream has been reached. There's no way for a client to detect such behaviour, so it's probably best for Tika to always use BufferedInputStream to wrap incoming streams when mark support is needed. This may cause one layer of extra buffering, but avoids problems with such broken streams.