[JCR-1300] spi2dav Improve performance for large binary properties

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: jcr-server 1.4.1
• Component/s: jackrabbit-jcr-server, sandbox
• Assignee: Angela Schreiber
• Reporter: Jozef Wagner
• Created: 09/Jan/08 11:56
• Updated: 29/Sep/08 14:47
• Resolved: 20/Aug/08 13:19

Description

Sending large binary properties over spi2dav is slow and requires a lot of heap space in both client and server.
One problematic part is base64 conversion of the property value.

On the contrary, using 'normal' webdav interface (/repository/default/ instead of /server) for uploading a file (through traditional webdav client) it is pretty fast and don't have such impact on heap space.

Some suggestions from the previous discussion:

• avoid temporary copies of the data, and persist large objects as early as possible.
• transfer large objects in blocks from the Jackrabbit SPI client to the server (and back).
• make usage of the global data store (JCR-926).
• straight forward PUT for single-valued properties

Link to discussion: http://www.mail-archive.com/[e-mail]/msg09481.html