Tamas Domok created YARN-11010:
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Summary: YARN ui2 hangs on the Queues page when the scheduler
response contains NaN values
Key: YARN-11010
URL: https://issues.apache.org/jira/browse/YARN-11010
Project: Hadoop YARN
Issue Type: Bug
Components: yarn-ui-v2
Affects Versions: 3.4.0
Reporter: Tamas Domok
Assignee: Tamas Domok
Attachments: capacity-scheduler.xml, shresponse.json
When the scheduler response contains NaN values for capacity and maxCapacity
the UI2 hangs on the Queues page. The console log shows the following error:
{code:java}
SyntaxError: Unexpected token N in JSON at position 666 {code}
The scheduler response:
{code:java}
"maxCapacity": NaN,
"absoluteMaxCapacity": NaN, {code}
NaN, infinity, -infinity is not valid in JSON syntax:
https://www.json.org/json-en.html
This might be related as well: YARN-10452
I managed to reproduce this with AQCv1, where I set the parent queue's capacity
in absolute mode, then I used percentage mode on the leaf-queue-template. I'm
not sure if this is a valid configuration, however there is no error or warning
in RM logs about any configuration error. To trigger the issue the
DominantResourceCalculator must be used. (When using absolute mode on the
leaf-queue-template this issue is not re-producible, further details on:
YARN-10922).
Reproduction steps:
# Start the cluster with the attached configuration
# Check the Queues page on UI2 (it should work at this point)
# Send an example job (yarn jar hadoop-mapreduce-examples-3.4.0-SNAPSHOT.jar
pi 1 10)
# Check the Queues page on UI2 (it should not be working at this point)
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