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https://issues.apache.org/jira/browse/HIVE-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rajesh Balamohan updated HIVE-15388:
------------------------------------
Affects Version/s: 2.2.0
> HiveParser spends lots of time in parsing queries with lots "("
> ---------------------------------------------------------------
>
> Key: HIVE-15388
> URL: https://issues.apache.org/jira/browse/HIVE-15388
> Project: Hive
> Issue Type: Improvement
> Affects Versions: 2.2.0
> Reporter: Rajesh Balamohan
>
> Branch: apache-master (applicable with previous releases as well)
> Queries generated via tools can have lots "(" for "AND/OR" conditions. This
> causes huge delays in parsing phase when the number of expressions are high.
> e.g
> {noformat}
> SELECT `iata`,
> `airport`,
> `city`,
> `state`,
> `country`,
> `lat`,
> `lon`
> FROM airports
> WHERE
> ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((`airports`.`airport`
> = "Thigpen"
>
> OR `airports`.`airport` = "Astoria Regional")
>
> OR `airports`.`airport` = "Warsaw Municipal")
>
> OR `airports`.`airport` = "John F Kennedy Memorial")
>
> OR `airports`.`airport` = "Hall-Miller Municipal")
>
> OR `airports`.`airport` = "Atqasuk")
> OR
> `airports`.`airport` = "William B Hartsfield-Atlanta Intl")
> OR
> `airports`.`airport` = "Artesia Municipal")
> OR
> `airports`.`airport` = "Outagamie County Regional")
> OR
> `airports`.`airport` = "Watertown Municipal")
> OR
> `airports`.`airport` = "Augusta State")
> OR
> `airports`.`airport` = "Aurora Municipal")
> OR
> `airports`.`airport` = "Alakanuk")
> OR
> `airports`.`airport` = "Austin Municipal")
> OR
> `airports`.`airport` = "Auburn Municipal")
> OR
> `airports`.`airport` = "Auburn-Opelik")
> OR
> `airports`.`airport` = "Austin-Bergstrom International")
> OR
> `airports`.`airport` = "Wausau Municipal")
> OR
> `airports`.`airport` = "Mecklenburg-Brunswick Regional")
> OR
> `airports`.`airport` = "Alva Regional")
> OR
> `airports`.`airport` = "Asheville Regional")
> OR
> `airports`.`airport` = "Avon Park Municipal")
> OR
> `airports`.`airport` = "Wilkes-Barre/Scranton Intl")
> OR
> `airports`.`airport` = "Marana Northwest Regional")
> OR
> `airports`.`airport` = "Catalina")
> OR
> `airports`.`airport` = "Washington Municipal")
> OR
> `airports`.`airport` = "Wainwright")
> OR `airports`.`airport`
> = "West Memphis Municipal")
> OR `airports`.`airport`
> = "Arlington Municipal")
> OR `airports`.`airport` =
> "Algona Municipal")
> OR `airports`.`airport` =
> "Chandler")
> OR `airports`.`airport` =
> "Altus Municipal")
> OR `airports`.`airport` =
> "Neil Armstrong")
> OR `airports`.`airport` =
> "Angel Fire")
> OR `airports`.`airport` =
> "Waycross-Ware County")
> OR `airports`.`airport` =
> "Colorado City Municipal")
> OR `airports`.`airport` =
> "Hazelhurst")
> OR `airports`.`airport` =
> "Kalamazoo County")
> OR `airports`.`airport` =
> "Granville")
> OR `airports`.`airport` = "Silver
> Springs")
> OR `airports`.`airport` = "Whitford")
> OR `airports`.`airport` = "Biddeford
> Municipal")
> OR `airports`.`airport` = "Sugarloaf
> Regional")
> OR `airports`.`airport` = "Barnes
> Municipal")
> OR `airports`.`airport` = "Columbus
> Municipal")
> OR `airports`.`airport` = "Battle
> Mountain")
> OR `airports`.`airport` = "Huron County
> Memorial")
> OR `airports`.`airport` = "New Braunfels
> Municipal")
> OR `airports`.`airport` = "Benson Municipal")
> OR `airports`.`airport` = "Curtis")
> OR `airports`.`airport` = "Marlboro County")
> OR `airports`.`airport` = "Broken Bow
> Municipal")
> OR `airports`.`airport` = "Virginia Tech")
> OR `airports`.`airport` = "Bryce Canyon")
> OR `airports`.`airport` = "Black River Falls Area")
> OR `airports`.`airport` = "Boca Raton")
> OR `airports`.`airport` = "Birchwood")
> OR `airports`.`airport` = "Baudette International")
> OR `airports`.`airport` = "Blanding Muni")
> OR `airports`.`airport` = "Bradley International")
> OR `airports`.`airport` = "Morrilton Municipal")
> OR `airports`.`airport` = "Igor I Sikorsky Memorial")
> OR `airports`.`airport` = "Broadus")
> OR `airports`.`airport` = "Laurence G Hanscom")
> OR `airports`.`airport` = "Southwest Michigan Regional")
> OR `airports`.`airport` = "Bethel")
> OR `airports`.`airport` = "Bradford Reg")
> OR `airports`.`airport` = "Scotts Bluff County")
> OR `airports`.`airport` = "Boeing Field/King County Intl")
> OR `airports`.`airport` = "Buffalo Municipal")
> OR `airports`.`airport` = "Meadows")
> OR `airports`.`airport` = "Mobile Downtown")
> OR `airports`.`airport` = "Virgil I Grissom Municipal")
> OR `airports`.`airport` = "Silver Bay Municipal");
> {noformat}
> This query would take more than minutes to parse and compile. If the "(" are
> removed manually, it gets completed in 2-3 seconds.
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