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https://issues.apache.org/jira/browse/HBASE-14706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14991274#comment-14991274
]
Hudson commented on HBASE-14706:
--------------------------------
FAILURE: Integrated in HBase-1.1-JDK8 #1673 (See
[https://builds.apache.org/job/HBase-1.1-JDK8/1673/])
HBASE-14706 Revert due to compilation error in TestRegionLocationFinder (tedyu:
rev e18c10846a234a2562a467b9dc6ad44df4df2e00)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/RegionLocationFinder.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/TestRegionLocationFinder.java
> RegionLocationFinder should return multiple servernames by top host
> -------------------------------------------------------------------
>
> Key: HBASE-14706
> URL: https://issues.apache.org/jira/browse/HBASE-14706
> Project: HBase
> Issue Type: Bug
> Components: Balancer
> Affects Versions: 2.0.0, 1.2.0, 1.3.0
> Reporter: Guanghao Zhang
> Assignee: Guanghao Zhang
> Fix For: 2.0.0, 1.2.0, 1.3.0
>
> Attachments: HBASE-14706-branch-1.1.patch,
> HBASE-14706-trunk_v1.patch, HBASE-14706-trunk_v2.patch,
> HBASE-14706-trunk_v3.patch, HBASE-14706-trunk_v4.patch, HBASE-14706.patch
>
>
> Multiple RS can run on the same host. But in current RegionLocationFinder,
> mapHostNameToServerName map one host to only one server. This will make
> LocalityCostFunction get wrong locality about region.
> {code}
> // create a mapping from hostname to ServerName for fast lookup
> HashMap<String, ServerName> hostToServerName = new HashMap<String,
> ServerName>();
> for (ServerName sn : regionServers) {
> hostToServerName.put(sn.getHostname(), sn);
> }
> {code}
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