Duo Zhang commented on HBASE-20144:

The hadoopchecks always fail, in hbase-thrift module. This time it fail with
[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-install-plugin:2.5.2:install (default-install) 
on project hbase-thrift: Failed to install metadata 
org.apache.hbase:hbase-thrift:3.0.0-SNAPSHOT/maven-metadata.xml: Could not 
parse metadata 
 in epilog non whitespace content is not allowed but got / (position: END_TAG 
seen ...</metadata>\n/... @25:2)  -> [Help 1]

Seems a failed build left a broken file in the local repo?

> The shutdown of master will hang if there are no live region server
> -------------------------------------------------------------------
>                 Key: HBASE-20144
>                 URL: https://issues.apache.org/jira/browse/HBASE-20144
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Major
>             Fix For: 2.0.0
>         Attachments: HBASE-20144-UT.patch, HBASE-20144-v1.patch, 
> HBASE-20144.patch
> In a graceful shutdown, we will set cluster down in ServerManager, and in 
> ServerManger.expireServer, if the cluster down flag is true and all rses are 
> gone, we will call master.stop and quit.
> But if we have no live rs when shutting down, then expireServer will never be 
> triggered, so we are dead...

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