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https://issues.apache.org/jira/browse/IGNITE-15416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amelchev Nikita updated IGNITE-15416:
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Labels: (was: cggg)
> False warnings from default Checkpoint and Collision SPIs
> ---------------------------------------------------------
>
> Key: IGNITE-15416
> URL: https://issues.apache.org/jira/browse/IGNITE-15416
> Project: Ignite
> Issue Type: Improvement
> Components: compute
> Affects Versions: 2.10, 2.11
> Reporter: Alexey Kukushkin
> Assignee: Roman Puchkovskiy
> Priority: Major
> Fix For: 2.13
>
> Attachments: NoopCheckpointSpi.java
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Single-JAR Apache Ignite (no other dependencies but {{ignite-core}}) displays
> the two below warnings from the Checkpoint and Collision SPIs:
> {noformat}
> WARNING: Checkpoints are disabled (to enable configure any GridCheckpointSpi
> implementation)
> WARNING: Collision resolution is disabled (all jobs will be activated upon
> arrival).
> {noformat}
> A "warning" must be something requiring attention from the Ignite users. That
> is not the case for those messages:
> * The {{Checkpoints are disabled}} message warns that the [save/load/remove
> compute job state
> API|https://ignite.apache.org/releases/latest/javadoc/org/apache/ignite/spi/checkpoint/CheckpointSpi.html]
> is not implemented and would not have any effect.
> Although that is useful information, not all the Ignite apps really use the
> checkpoint API and that means it is a false alarm for them since they have
> nothing to do with it.
> * The {{Collision resolution is disabled}} message says that the default
> "all jobs will be activated upon arrival" policy is applied. This does not
> seem like a problem at all since this policy might be OK for most users.
> Also, not all the apps use Ignite Compute API (although it might be used
> implicitly). Thus, this is also not a warning since most users have nothing
> to do with it.
> Enhance Ignite to display a warning only when the user has to act upon it:
> * Ignite might display the {{Checkpoints are disabled}} message only when
> the [save/load/remove compute job state
> API|https://ignite.apache.org/releases/latest/javadoc/org/apache/ignite/spi/checkpoint/CheckpointSpi.html]
> is really used like demonstrated in the attached enhanced
> [^NoopCheckpointSpi.java]
> * The The {{Collision resolution is disabled}} message is not a warning at
> all. Consider turning it to an INFO message or removing it and making sure
> the Ignite documentation clearly explains the default "all jobs will be
> activated upon arrival" policy.
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