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https://issues.apache.org/jira/browse/IMPALA-12865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sai Hemanth Gantasala resolved IMPALA-12865.
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Fix Version/s: Impala 5.0.0
Resolution: Fixed
> enable_reload_events breaks enable_skipping_older_events by pushing
> lastRefreshEventId too high
> -----------------------------------------------------------------------------------------------
>
> Key: IMPALA-12865
> URL: https://issues.apache.org/jira/browse/IMPALA-12865
> Project: IMPALA
> Issue Type: Bug
> Components: Catalog
> Reporter: Quanlong Huang
> Assignee: Sai Hemanth Gantasala
> Priority: Critical
> Fix For: Impala 5.0.0
>
>
> When enable_reload_events is true, catalogd fires RELOAD events after REFRESH
> finishes reloading the table/partition. The RELOAD event id is also used to
> update lastRefreshEventId of the table/partition.
> [https://github.com/apache/impala/blob/784971c018c2dc44c53d7c0f366ad49cd8681ac6/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java#L6807-L6814]
> This is problematic when enable_skipping_older_events is true. HMS events
> generated after the reload and before the RELOAD event will be skipped.
> [https://github.com/apache/impala/blob/784971c018c2dc44c53d7c0f366ad49cd8681ac6/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEvents.java#L1219-L1221]
> The issue is identified in the review of
> [https://gerrit.cloudera.org/c/21096/1/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java#6799]
> CC [~hemanth619], [~VenuReddy], [~csringhofer]
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