Andrey Kornev created IGNITE-7156:
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Summary: Disabling readFromBackup for a cache effectively disables
near cache on non-affinity nodes
Key: IGNITE-7156
URL: https://issues.apache.org/jira/browse/IGNITE-7156
Project: Ignite
Issue Type: Bug
Components: cache
Affects Versions: 2.3
Reporter: Andrey Kornev
This line in GridNearGetFuture:
{{boolean allowLocRead = !forcePrimary ||
cctx.localNode().equals(affNodes.get(0));}} [(github
link)|https://github.com/apache/ignite/blob/1e8b5501ee9fde61f979c104b4d271a1a458eb1d/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearGetFuture.java#L434]
effectively disables Near Cache if "read from backup" is not enabled in the
cache config and the local node is not one of the affinity nodes. Disabling
backup reads should not affect near cache usage.
If this is by design (which would be unfortunate), then the javadocs of
{{CacheConfiguration.setReadFromBackup(boolean)}} should be updated to reflect
the behavior.
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