Ticket #1942 (closed defect: fixed)

Opened 4 months ago

Last modified 4 months ago

Server is down when zooming map with SID type raster image.

Reported by: christinebao Owned by: Christine Bao
Priority: medium Milestone:
Component: Feature Service Version: 2.1.0
Severity: major Keywords:
Cc: External ID: 1447921

Description

Report from Autodesk QA:

steps: 1. In studio, start Load Procedure to load a sid type raster image, see attached one. 2. New a map definition with the layer generated. 3. New a flexible web layout with the map definition. 4. Open the web layout in any browser, Chrome, Firefox... 5. Zoom in, zoom out map repeatedly.

Result: Error pops up after a while as server is down.

Expectation: No error to zoom in/out sid raster image.

Regression: Y, fine in Reeses with the same image Workaround: N

Attachments

Fix1942.patch Download (0.5 KB) - added by christinebao 4 months ago.

Change History

Changed 4 months ago by christinebao

Cause of this problem: The problem is caused by recent update of ATIL (Jan 9, 2012). The decoder is changed and not work for multiple thread. So in MapGuide if multiple request is sent to get image, the memory mess up and crash. Note: in flexible weblayout, many requests (about 5~8) are send during one zoom, so it's more obvious to see the crash. In basic weblayout only one request is sent during one zoom, so it's not so obvious to see the crash in one user environment, but if multiple users use basic weblayout, the crash still happens.

Fix: Add a ACE lock in get raster data.

Changed 4 months ago by christinebao

Changed 4 months ago by christinebao

Attache  http://trac.osgeo.org/mapguide/attachment/ticket/1942/Fix1942.patch for fixing this ticket.

Changed 4 months ago by christinebao

  • status changed from new to closed
  • resolution set to fixed

Submit to trunk in r6472.

Changed 4 months ago by christinebao

Submit to 2.4Jedi branch in r6473.

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