[TS-1457] transforms during video requests cause massive memory growth

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Fix Version/s: 3.3.1
• Component/s: Core

Environment

Linux RHEL6.2

• Assignee: Alan M. Carroll
• Reporter: Aidan McGurn
• Created: 10/Sep/12 15:09
• Updated: 05/Jun/13 22:42
• Resolved: 16/Sep/12 15:14

Description

Running the null-transform example object over 3.2.0, shows massive memory growth -
This could be seen on our system since using 3.2.0 with custom plugin which invokes transforms - under load ~6K and with video content (only Video - small files are ok), a huge growth was seen (GB's) such that it crashes the load test machine.

heap profiles are attached for comparison:
-null transform example so over 3.2.0
-NO null transform over 3.2.0
-null transform example so over 3.0.2

As can be seen no issue in 3.0.2 -
The profiles show clearly the call chain is different for both releases

Issue Links

• contains: TS-1247 Data from a response transform in a plugin causes excess memory usage
• relates to: TS-1004 transformation plugins cause connection close when content length is not known ahead