org.apache.hadoop.hbase.master.handler
Class ServerShutdownHandler
java.lang.Object
org.apache.hadoop.hbase.executor.EventHandler
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler
- All Implemented Interfaces:
- Comparable<Runnable>, Runnable
- Direct Known Subclasses:
- MetaServerShutdownHandler
public class ServerShutdownHandler
- extends EventHandler
Process server shutdown.
Server-to-handle must be already in the deadservers lists. See
ServerManager.expireServer(ServerName)
serverName
protected final ServerName serverName
services
protected final MasterServices services
deadServers
protected final DeadServer deadServers
shouldSplitHlog
protected final boolean shouldSplitHlog
ServerShutdownHandler
public ServerShutdownHandler(Server server,
MasterServices services,
DeadServer deadServers,
ServerName serverName,
boolean shouldSplitHlog)
getInformativeName
public String getInformativeName()
- Description copied from class:
EventHandler
- Event implementations should override thie class to provide an
informative name about what event they are handling. For example,
event-specific information such as which region or server is
being processed should be included if possible.
- Overrides:
getInformativeName
in class EventHandler
toString
public String toString()
- Overrides:
toString
in class EventHandler
process
public void process()
throws IOException
- Description copied from class:
EventHandler
- This method is the main processing loop to be implemented by the various
subclasses.
- Specified by:
process
in class EventHandler
- Throws:
IOException
processDeadRegion
public static boolean processDeadRegion(HRegionInfo hri,
Result result,
AssignmentManager assignmentManager,
CatalogTracker catalogTracker)
throws IOException
- Process a dead region from a dead RS. Checks if the region is disabled or
disabling or if the region has a partially completed split.
- Parameters:
hri
- result
- assignmentManager
- catalogTracker
-
- Returns:
- Returns true if specified region should be assigned, false if not.
- Throws:
IOException
fixupDaughters
public static int fixupDaughters(Result result,
AssignmentManager assignmentManager,
CatalogTracker catalogTracker)
throws IOException
- Check that daughter regions are up in .META. and if not, add them.
- Parameters:
hris
- All regions for this server in meta.result
- The contents of the parent row in .META.
- Returns:
- the number of daughters missing and fixed
- Throws:
IOException
Copyright © 2015 The Apache Software Foundation. All Rights Reserved.