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java.lang.Objectorg.apache.hadoop.hbase.master.ServerManager
public class ServerManager
The ServerManager class manages info about region servers - HServerInfo, load numbers, dying servers, etc.
Constructor Summary | |
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ServerManager(HMaster master)
Constructor. |
Method Summary | |
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boolean |
canAssignUserRegions()
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double |
getAverageLoad()
Compute the average load across all region servers. |
HServerInfo |
getHServerInfo(HServerAddress hsa)
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SortedMap<HServerLoad,Set<String>> |
getLoadToServers()
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HServerInfo |
getServerInfo(String name)
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Map<String,HServerLoad> |
getServersToLoad()
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Map<String,HServerInfo> |
getServersToServerInfo()
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boolean |
isDead(String serverName)
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void |
notifyServers()
Wakes up threads waiting on serversToServerInfo |
int |
numServers()
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void |
processRegionClose(HRegionInfo region)
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void |
processRegionOpen(HServerInfo serverInfo,
HRegionInfo region,
ArrayList<HMsg> returnMsgs)
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void |
recordNewServer(HServerInfo info)
Adds the HSI to the RS list and creates an empty load |
void |
setMinimumServerCount(int minimumServerCount)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ServerManager(HMaster master)
master
- Method Detail |
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public void recordNewServer(HServerInfo info)
info
- The region server informationspublic void processRegionOpen(HServerInfo serverInfo, HRegionInfo region, ArrayList<HMsg> returnMsgs)
public void processRegionClose(HRegionInfo region)
public double getAverageLoad()
public int numServers()
public HServerInfo getServerInfo(String name)
name
- server name
public Map<String,HServerInfo> getServersToServerInfo()
public HServerInfo getHServerInfo(HServerAddress hsa)
hsa
-
hsa
or null
if nothing found.public Map<String,HServerLoad> getServersToLoad()
public SortedMap<HServerLoad,Set<String>> getLoadToServers()
public void notifyServers()
public boolean isDead(String serverName)
serverName
-
public boolean canAssignUserRegions()
public void setMinimumServerCount(int minimumServerCount)
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