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https://issues.apache.org/jira/browse/IMPALA-8962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324412#comment-17324412
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Abhishek Rawat commented on IMPALA-8962:
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The new SIMBA drivers have fixed the reported issue on the driver side:
Impala JDBC v2.6.20 driver
Impala ODBC v2.6.12 driver
> FETCH_ROWS_TIMEOUT_MS should apply before rows are available
> ------------------------------------------------------------
>
> Key: IMPALA-8962
> URL: https://issues.apache.org/jira/browse/IMPALA-8962
> Project: IMPALA
> Issue Type: Bug
> Components: Clients
> Reporter: Sahil Takiar
> Assignee: Sahil Takiar
> Priority: Major
> Fix For: Impala 3.4.0
>
>
> IMPALA-7312 added a fetch timeout controlled by the query option
> {{FETCH_ROWS_TIMEOUT_MS}}. The issue is that the timeout only applies after
> the *first* batch of rows are available. The issue is that both Beeswax and
> HS2 clients call {{request_state->BlockOnWait}} inside
> {{ImpalaServer::FetchInternal}}. The call to {{BlockOnWait}} blocks until
> rows are ready to be consumed via {{ClientRequestState::FetchRows}}.
> So clients can still end up blocking indefinitely waiting for the first row
> batch to appear.
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