/**
* Calculate daughter regionid to use.
*
* @param hri Parent {@link HRegionInfo}
* @return Daughter region id (timestamp) to use.
*/
private static long getDaughterRegionIdTimestamp(final HRegionInfo hri) {
long rid = EnvironmentEdgeManager.currentTime();
// Regionid is timestamp. Can't be less than that of parent else will insert
// at wrong location in hbase:meta (See HBASE-710).
if (rid < hri.getRegionId()) {
LOG.warn(
"Clock skew; parent regions id is "
+ hri.getRegionId()
+ " but current time here is "
+ rid);
rid = hri.getRegionId() + 1;
}
return rid;
}
/**
* Create a new {@link HRegionInfo} from the snapshot region info. Keep the same startKey, endKey,
* regionId and split information but change the table name.
*
* @param snapshotRegionInfo Info for region to clone.
* @return the new HRegion instance
*/
public HRegionInfo cloneRegionInfo(final HRegionInfo snapshotRegionInfo) {
return new HRegionInfo(
tableDesc.getName(),
snapshotRegionInfo.getStartKey(),
snapshotRegionInfo.getEndKey(),
snapshotRegionInfo.isSplit(),
snapshotRegionInfo.getRegionId());
}
/**
* Costruct a copy of another HRegionInfo
*
* @param other
*/
public HRegionInfo(HRegionInfo other) {
super();
this.endKey = other.getEndKey();
this.offLine = other.isOffline();
this.regionId = other.getRegionId();
this.regionName = other.getRegionName();
this.split = other.isSplit();
this.startKey = other.getStartKey();
this.hashCode = other.hashCode();
this.encodedName = other.getEncodedName();
this.tableName = other.tableName;
this.replicaId = other.replicaId;
}
/**
* Convert a HRegionInfo to a RegionInfo
*
* @param info the HRegionInfo to convert
* @return the converted RegionInfo
*/
public static RegionInfo convert(final HRegionInfo info) {
if (info == null) return null;
RegionInfo.Builder builder = RegionInfo.newBuilder();
builder.setTableName(ProtobufUtil.toProtoTableName(info.getTable()));
builder.setRegionId(info.getRegionId());
if (info.getStartKey() != null) {
builder.setStartKey(ByteStringer.wrap(info.getStartKey()));
}
if (info.getEndKey() != null) {
builder.setEndKey(ByteStringer.wrap(info.getEndKey()));
}
builder.setOffline(info.isOffline());
builder.setSplit(info.isSplit());
builder.setReplicaId(info.getReplicaId());
return builder.build();
}
/**
* Get merged region info through the specified two regions
*
* @param a merging region A
* @param b merging region B
* @return the merged region info
*/
public static HRegionInfo getMergedRegionInfo(final HRegionInfo a, final HRegionInfo b) {
long rid = EnvironmentEdgeManager.currentTime();
// Regionid is timestamp. Merged region's id can't be less than that of
// merging regions else will insert at wrong location in hbase:meta
if (rid < a.getRegionId() || rid < b.getRegionId()) {
LOG.warn(
"Clock skew; merging regions id are "
+ a.getRegionId()
+ " and "
+ b.getRegionId()
+ ", but current time here is "
+ rid);
rid = Math.max(a.getRegionId(), b.getRegionId()) + 1;
}
byte[] startKey = null;
byte[] endKey = null;
// Choose the smaller as start key
if (a.compareTo(b) <= 0) {
startKey = a.getStartKey();
} else {
startKey = b.getStartKey();
}
// Choose the bigger as end key
if (Bytes.equals(a.getEndKey(), HConstants.EMPTY_BYTE_ARRAY)
|| (!Bytes.equals(b.getEndKey(), HConstants.EMPTY_BYTE_ARRAY)
&& Bytes.compareTo(a.getEndKey(), b.getEndKey()) > 0)) {
endKey = a.getEndKey();
} else {
endKey = b.getEndKey();
}
// Merged region is sorted between two merging regions in META
HRegionInfo mergedRegionInfo = new HRegionInfo(a.getTable(), startKey, endKey, false, rid);
return mergedRegionInfo;
}
public static Map<String, HRegionContent> getRegionMap(HTable table, HBaseAdmin admin)
throws Exception {
// TODO Auto-generated method stub
Map<String, HRegionContent> regionMap = new HashMap<String, HRegionContent>();
try {
Map<HRegionInfo, ServerName> regionsInfo = table.getRegionLocations();
for (HRegionInfo ri : regionsInfo.keySet()) {
HRegionContent regionContent = new HRegionContent();
regionContent.tableName = ri.getTableNameAsString();
regionContent.encodedName = ri.getEncodedName();
regionContent.regionName = ri.getRegionNameAsString();
regionContent.regionNameBytes = ri.getRegionName();
regionContent.regionId = ri.getRegionId();
regionContent.startKey = ri.getStartKey();
regionContent.endKey = ri.getEndKey();
regionMap.put(regionContent.encodedName, regionContent);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ClusterStatus status = admin.getClusterStatus();
/* System.out.println("Cluster Status:\n--------------");
System.out.println("HBase Version: " + status.getHBaseVersion());
System.out.println("Version: " + status.getVersion());
System.out.println("No. Live Servers: " + status.getServersSize());
System.out.println("Cluster ID: " + status.getClusterId());
System.out.println("Servers: " + status.getServers());
System.out.println("No. Dead Servers: " + status.getDeadServers());
System.out.println("Dead Servers: " + status.getDeadServerNames());
System.out.println("No. Regions: " + status.getRegionsCount());
System.out.println("Regions in Transition: " + status.getRegionsInTransition());
System.out.println("No. Requests: " + status.getRequestsCount());
System.out.println("Avg Load: " + status.getAverageLoad());
System.out.println("\nServer Info:\n--------------");*/
for (ServerName server : status.getServers()) {
/*System.out.println("Hostname: " + server.getHostname());
System.out.println("Host and Port: " + server.getHostAndPort());
System.out.println("Server Name: " + server.getServerName());
System.out.println("RPC Port: " + server.getPort());
System.out.println("Start Code: " + server.getStartcode());*/
HServerLoad load = status.getLoad(server);
/*System.out.println("\nServer Load:\n--------------");
System.out.println("Load: " + load.getLoad());
System.out.println("Max Heap (MB): " + load.getMaxHeapMB());
System.out.println("Memstore Size (MB): " + load.getMemStoreSizeInMB());
System.out.println("No. Regions: " + load.getNumberOfRegions());
System.out.println("No. Requests: " + load.getNumberOfRequests());
System.out.println("Storefile Index Size (MB): " +
load.getStorefileIndexSizeInMB());
System.out.println("No. Storefiles: " + load.getStorefiles());
System.out.println("Storefile Size (MB): " + load.getStorefileSizeInMB());
System.out.println("Used Heap (MB): " + load.getUsedHeapMB());
System.out.println("\nRegion Load:\n--------------");*/
for (Map.Entry<byte[], HServerLoad.RegionLoad> entry : load.getRegionsLoad().entrySet()) {
HServerLoad.RegionLoad regionLoad = entry.getValue();
String regionLoadName = regionLoad.getNameAsString();
String[] tmpStrings = regionLoadName.split("\\.");
String encodeName = tmpStrings[tmpStrings.length - 1];
if (!regionMap.containsKey(encodeName)) {
continue;
}
HRegionContent regionContent = regionMap.get(encodeName);
regionContent.stores = regionLoad.getStores();
regionContent.storeFiles = regionLoad.getStorefiles();
regionContent.storefileSizeMB = regionLoad.getStorefileSizeMB();
regionContent.storefileIndexSizeMB = regionLoad.getStorefileIndexSizeMB();
regionContent.memStoreSizeMB = regionLoad.getMemStoreSizeMB();
regionContent.requestsCount = regionLoad.getRequestsCount();
regionContent.readRequestCount = regionLoad.getReadRequestsCount();
regionContent.writeRequestCount = regionLoad.getWriteRequestsCount();
}
}
int count = 0;
for (HRegionContent regionContent : regionMap.values()) {
/*System.out.println("table name : " + regionContent.tableName);
System.out.println("encoded name : " + regionContent.encodedName);
System.out.println("region name : " + regionContent.regionName);
System.out.println("regionId : " + regionContent.regionId);
System.out.println("startKey : " + regionContent.startKey.toString());
System.out.println("endKey : " + regionContent.endKey.toString());
System.out.println("No. Stores: " + regionContent.stores);
System.out.println("No. Storefiles: " + regionContent.storeFiles);
System.out.println("Storefile Size (MB): " + regionContent.storefileSizeMB);
System.out.println("Storefile Index Size (MB): " + regionContent.storefileIndexSizeMB);
System.out.println("Memstore Size (MB): " + regionContent.memStoreSizeMB);
System.out.println("No. Requests: " + regionContent.requestsCount);
System.out.println("No. Read Requests: " +
regionContent.readRequestCount);
System.out.println("No. Write Requests: " +
regionContent.writeRequestCount);
System.out.println();*/
count++;
}
/*LOG.info("region sum num: " + regionMap.size());
LOG.info("not null region num:" + count);
LOG.info("file size :" + fileSize);*/
return regionMap;
}