Philipp Masharov created IGNITE-12844:
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Summary: Too many caches can block discovery
Key: IGNITE-12844
URL: https://issues.apache.org/jira/browse/IGNITE-12844
Project: Ignite
Issue Type: Bug
Reporter: Philipp Masharov
Assignee: Philipp Masharov
Fix For: 2.9
Several thousand caches send metrics in each discovery message.
Check implementation of `TcpDiscoveryMetricsUpdateMessage`
This behavior increases processing time and raises message size. As a result,
the discovery worker is busy and the queue pool is growing.
We need to notify about the possible issue and print suggestion, for example,
`-DIGNITE_DISCOVERY_DISABLE_CACHE=true` if it can help. Assumes to print WARN
message once, for example, if TcpDiscoveryMetricsUpdateMessage consists of more
than 500 CacheMetricsSnaphot instances.
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