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https://issues.apache.org/jira/browse/HBASE-19861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16516685#comment-16516685
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Guanghao Zhang commented on HBASE-19861:
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bq. Is this behaviour intentional?
Yes. backup master show nothing about tables.
bq. I think we should fall back to rpc based listing in case of backup master
and can have this improvement in case of active master.
The backup master may use a seperate UI based on rpc. No need active master
fall back to rpc.
> 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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