Hong Liang Teoh created FLINK-32488:
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Summary: Introduce configuration to control ExecutionGraph cache
in REST API
Key: FLINK-32488
URL: https://issues.apache.org/jira/browse/FLINK-32488
Project: Flink
Issue Type: Improvement
Components: Runtime / REST
Affects Versions: 1.17.1, 1.16.2
Reporter: Hong Liang Teoh
Fix For: 1.18.0
*What*
Currently, REST handlers that inherit from AbstractExecutionGraphHandler serve
information derived from a cached ExecutionGraph.
This ExecutionGraph cache currently derives it's timeout from
{*}web.refresh-interval{*}. The *web.refresh-interval* controls both the
refresh rate of the Flink dashboard and the ExecutionGraph cache timeout.
We should introduce a new configuration to control the ExecutionGraph cache,
namely {*}rest.cache.execution-graph.expiry{*}.
*Why*
Sharing configuration between REST handler and Flink dashboard is a sign that
we are coupling the two.
Ideally, we want our REST API behaviour to independent of the Flink dashboard
(e.g. supports programmatic access).
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