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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11258) The function drop_database_core() of HiveMetaStore.java may not drop all the tables
Date Tue, 28 Jul 2015 23:05:04 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aihua Xu updated HIVE-11258:
----------------------------
    Attachment:     (was: HIVE-11258.patch)

> The function drop_database_core() of HiveMetaStore.java may not drop all the tables
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-11258
>                 URL: https://issues.apache.org/jira/browse/HIVE-11258
>             Project: Hive
>          Issue Type: Bug
>          Components: Database/Schema
>    Affects Versions: 2.0.0
>            Reporter: Aihua Xu
>            Assignee: Aihua Xu
>         Attachments: HIVE-11258.patch
>
>
> The following code in that function doesn't work properly.
> {noformat}
>         int startIndex = 0;
>         int endIndex = -1;
>         // retrieve the tables from the metastore in batches to alleviate memory constraints
>         while (endIndex < allTables.size() - 1) {
>           startIndex = endIndex + 1;
>           endIndex = endIndex + tableBatchSize;
>           if (endIndex >= allTables.size()) {
>             endIndex = allTables.size() - 1;
>           }
> {noformat}
> e.g.: if we have 5 tables and tableBatchSize is 10, startIndex will be 0 and endIndex
will be 4. We only drop 4 tables since sublist(startIndex, endIndex) is inclusive on startIndex
and exclusive on endIndex.
> If total tables is larger tableBatchSize, we also have similar issues.
> This is discovered when I work on HIVE-11255.



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