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Document expensive IMap reporting threshold & property #1498

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Jan 27, 2025
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Document expensive IMap reporting threshold & property #1498

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Document expensive IMap reporting threshold & property
JamesHazelcast Jan 23, 2025
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Update docs/modules/cluster-performance/pages/imap-bulk-read-operatio…
JamesHazelcast Jan 24, 2025
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6 changes: 6 additions & 0 deletions docs/modules/cluster-performance/pages/imap-bulk-read-operations.adoc
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Expand Up @@ -19,6 +19,12 @@ Methods like `IMap#entrySet()` and `IMap#values()` can trigger an OOME, dependin
on the size of your map and the available memory on each member.
To mitigate this risk, you should follow these best practices.

NOTE: To help you to monitor this potential problem, client invocations of certain `IMap` methods are logged on the member side when their results meet or exceed a threshold.
The threshold for logging large results is defined
by the Hazelcast property `hazelcast.expensive.imap.invocation.reporting.threshold`,
which has a default value of `100` results.
The relevant methods are listed in the https://docs.hazelcast.org/docs/{full-version}/javadoc/com/hazelcast/spi/properties/ClusterProperty.html#EXPENSIVE_IMAP_INVOCATION_REPORTING_THRESHOLD[Javadocs^].

== Plan capacity
Proper capacity planning is crucial for providing
sufficient system resources to the Hazelcast cluster. This
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