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https://issues.apache.org/jira/browse/IGNITE-10754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16738245#comment-16738245
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Vladimir Ozerov commented on IGNITE-10754:
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[~jooger],
8. In this case second part of the question is still relevant - why do not do
the same check in {{else if (removeLink(node))}} branch after link replacement?
9. EXPLAIN is just normal query and AFAIK it works in previous implementation.
When it comes to monitoring administrator would like to know what is exactly
being executed on the cluster, and in general case {{EXPLAIN}} is not free
stuff (especially {{EXPLAIN ANALYZE}} - we supported it before, then dropped,
but very likely to add in nearest future),
11. Please see
{{org.apache.ignite.internal.processors.query.h2.IgniteH2Indexing#queryLocalText}}
- we track running text queries as well
> Query history statistics API
> ----------------------------
>
> Key: IGNITE-10754
> URL: https://issues.apache.org/jira/browse/IGNITE-10754
> Project: Ignite
> Issue Type: Task
> Components: sql
> Reporter: Yury Gerzhedovich
> Assignee: Yury Gerzhedovich
> Priority: Major
> Labels: iep-29, monitoring
>
> As of now we have query statistics
> (*_org.apache.ignite.IgniteCache#queryMetrics_*) , but have few issues.
> 1) Duration execution it just time between start execution and return cursor
> to client and doesn't include all life time of query.
> 2) It doesn't know about multistatement queries. Such queries participate in
> statistics as single query without splitting.
> 3) API to access the statistics expose as depend on cache, however query
> don't have such dependency.
>
> Need to create parallel similar realization as we already have.
> Use new infrastructure of tracking running queries developed under
> IGNITE-10621 and update statistics on unregister phase.
> Expose API on upper level then it placed now. Right place will be written
> later.
>
> Old API will be marked as deprecated.
>
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