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When users use charts with fine staggered collision mode in Cognos Workspace on TM1 cubes with many zero values, it hangs and pegs the Cognos servers' CGSLAUNCHER.exe processes at 100%. There's some type of infinite loop that does not allow the process to return. The only thing to do is to reboot the Cognos servers.
Cognos Workspace is the tool to promote self-service analysis and reporting. However, we cannot knowingly promote this tool knowing that a basic usage such as charting of data from our TM1 server could easily bring our Cognos servers to a halt.
Suggestion: Place some type of timeout in chart rendering engine which stops generating a chart if lots of zero value data is encountered or if certain number of minutes have passed in generating the chart. It is better to fail the chart rendering process for a particular chart vs bringing down the whole Cognos server.
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