[jira] [Commented] (HBASE-19861) Avoid using RPCs when querying table infos for master status pages

["Nihal Jain (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-19861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16515366#comment-16515366 ] 

Nihal Jain commented on HBASE-19861:
------------------------------------

Hi, now the backup master UI does not list any user tables. Is this behaviour intentional?

> Avoid using RPCs when querying table infos for master status pages
> ------------------------------------------------------------------
>
>                 Key: HBASE-19861
>                 URL: https://issues.apache.org/jira/browse/HBASE-19861
>             Project: HBase
>          Issue Type: Improvement
>          Components: UI
>            Reporter: Xiaolin Ha
>            Assignee: Xiaolin Ha
>            Priority: Major
>             Fix For: 2.0.0-beta-2, 2.0.0
>
>         Attachments: 19861.4.patch, HBASE-19861.v1.patch, HBASE-19861.v3.patch, HBASE-19861.v4.patch, errorMsgExample.png
>
>
> When querying table information for master status pages, currently method is using admin interfaces. For example, when list user tables, codes are as follows.
> Connection connection = master.getConnection();
> Admin admin = connection.getAdmin();
> try {
>  tables = admin.listTables();
> } finally {
>  admin.close();
> }
> But actually, we can get all user tables from master's memory.
> Using admin interfaces means using RPCs, which has a low efficiency.
>  



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