/**
* Get the descriptive name as {@link RegionState} does it but with hidden startkey optionally
*
* @param state
* @param conf
* @return descriptive string
*/
public static String getDescriptiveNameFromRegionStateForDisplay(
RegionState state, Configuration conf) {
if (conf.getBoolean(DISPLAY_KEYS_KEY, true)) return state.toDescriptiveString();
String descriptiveStringFromState = state.toDescriptiveString();
int idx = descriptiveStringFromState.lastIndexOf(" state=");
String regionName = getRegionNameAsStringForDisplay(state.getRegion(), conf);
return regionName + descriptiveStringFromState.substring(idx);
}
/**
* Gets the meta region location, if available. Does not block.
*
* @param zkw
* @param replicaId
* @return server name
*/
public ServerName getMetaRegionLocation(final ZooKeeperWatcher zkw, int replicaId) {
try {
RegionState state = getMetaRegionState(zkw, replicaId);
return state.isOpened() ? state.getServerName() : null;
} catch (KeeperException ke) {
return null;
}
}
/**
* Convert a protobuf ClusterStatus to a ClusterStatus
*
* @param proto the protobuf ClusterStatus
* @return the converted ClusterStatus
*/
public static ClusterStatus convert(ClusterStatusProtos.ClusterStatus proto) {
Map<ServerName, ServerLoad> servers = new HashMap<ServerName, ServerLoad>();
for (LiveServerInfo lsi : proto.getLiveServersList()) {
servers.put(ProtobufUtil.toServerName(lsi.getServer()), new ServerLoad(lsi.getServerLoad()));
}
Collection<ServerName> deadServers = new LinkedList<ServerName>();
for (HBaseProtos.ServerName sn : proto.getDeadServersList()) {
deadServers.add(ProtobufUtil.toServerName(sn));
}
Collection<ServerName> backupMasters = new LinkedList<ServerName>();
for (HBaseProtos.ServerName sn : proto.getBackupMastersList()) {
backupMasters.add(ProtobufUtil.toServerName(sn));
}
final Map<String, RegionState> rit = new HashMap<String, RegionState>();
for (RegionInTransition region : proto.getRegionsInTransitionList()) {
String key = new String(region.getSpec().getValue().toByteArray());
RegionState value = RegionState.convert(region.getRegionState());
rit.put(key, value);
}
final int numMasterCoprocessors = proto.getMasterCoprocessorsCount();
final String[] masterCoprocessors = new String[numMasterCoprocessors];
for (int i = 0; i < numMasterCoprocessors; i++) {
masterCoprocessors[i] = proto.getMasterCoprocessors(i).getName();
}
return new ClusterStatus(
proto.getHbaseVersion().getVersion(),
ClusterId.convert(proto.getClusterId()).toString(),
servers,
deadServers,
ProtobufUtil.toServerName(proto.getMaster()),
backupMasters,
rit,
masterCoprocessors,
proto.getBalancerOn());
}
@Override
public ReportRegionStateTransitionResponse reportRegionStateTransition(
RpcController c, ReportRegionStateTransitionRequest req) throws ServiceException {
ReportRegionStateTransitionResponse resp = super.reportRegionStateTransition(c, req);
if (enabled.get()
&& req.getTransition(0).getTransitionCode() == TransitionCode.READY_TO_MERGE
&& !resp.hasErrorMessage()) {
RegionStates regionStates = myMaster.getAssignmentManager().getRegionStates();
for (RegionState regionState : regionStates.getRegionsInTransition().values()) {
// Find the merging_new region and remove it
if (regionState.isMergingNew()) {
regionStates.deleteRegion(regionState.getRegion());
}
}
}
return resp;
}
