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https://issues.apache.org/jira/browse/HDFS-15448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

jianghua zhu updated HDFS-15448:
--------------------------------
    Description: 
When starting a DataNode, call BlockPoolManager#startAll() twice.
The first call:
BlockPoolManager#doRefreshNamenodes()
private void doRefreshNamenodes(
 Map<String, Map<String, InetSocketAddress>> addrMap,
 Map<String, Map<String, InetSocketAddress>> lifelineAddrMap)
 throws IOException {
 ...
startAll();
...
}

The second call:
DataNode#runDatanodeDaemon()
public void runDatanodeDaemon() throws IOException {
blockPoolManager.startAll();
...
}

> When starting a DataNode, call BlockPoolManager#startAll() twice.
> -----------------------------------------------------------------
>
>                 Key: HDFS-15448
>                 URL: https://issues.apache.org/jira/browse/HDFS-15448
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 3.1.1
>            Reporter: jianghua zhu
>            Assignee: jianghua zhu
>            Priority: Major
>
> When starting a DataNode, call BlockPoolManager#startAll() twice.
> The first call:
> BlockPoolManager#doRefreshNamenodes()
> private void doRefreshNamenodes(
>  Map<String, Map<String, InetSocketAddress>> addrMap,
>  Map<String, Map<String, InetSocketAddress>> lifelineAddrMap)
>  throws IOException {
>  ...
> startAll();
> ...
> }
> The second call:
> DataNode#runDatanodeDaemon()
> public void runDatanodeDaemon() throws IOException {
> blockPoolManager.startAll();
> ...
> }



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