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https://issues.apache.org/jira/browse/IMPALA-12323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenzhe Zhou resolved IMPALA-12323.
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Target Version: Impala 4.3.0
Resolution: Fixed
> DDL hang with SYNC_DDL=1 when CatalogD HA enabled
> -------------------------------------------------
>
> Key: IMPALA-12323
> URL: https://issues.apache.org/jira/browse/IMPALA-12323
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 4.3.0
> Reporter: Wenzhe Zhou
> Assignee: Wenzhe Zhou
> Priority: Critical
> Fix For: Impala 4.3.0
>
>
> When CatalogD HA is enabled, standby catalogd does not receive catalog topic
> update from statestore and does not apply catalog updates from the active
> catalogd. Its min topic version is not changed.
> Function Statestore::GetMinSubscriberTopicVersion() loops through all
> subscribers including standby catalogd to find min topic version. Standby
> catalogd causes min_subscriber_topic_version not increased, and hence Impala
> server waits indefinitely in
> ImpalaServer::WaitForCatalogUpdateTopicPropagation().
> To fix the issue, skip standby catalogd when finding min topic version in
> Statestore::GetMinSubscriberTopicVersion().
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