public static void main(String[] args) throws Exception {
Configuration conf = HBaseConfig.Instance().getConfiguration();
// parse user input
Options opt = new Options();
opt.addOption(
OptionBuilder.withArgName("property=value")
.hasArg()
.withDescription("Override HBase Configuration Settings")
.create("D"));
CommandLine cmd = new GnuParser().parse(opt, args);
if (cmd.hasOption("D")) {
for (String confOpt : cmd.getOptionValues("D")) {
String[] kv = confOpt.split("=", 2);
if (kv.length == 2) {
conf.set(kv[0], kv[1]);
LOG.debug("-D configuration override: " + kv[0] + "=" + kv[1]);
} else {
throw new ParseException("-D option format invalid: " + confOpt);
}
}
}
if (1 != cmd.getArgList().size() || cmd.hasOption("h")) {
new HelpFormatter().printHelp("TableRegionScanner [ options ] <TABLE>", opt);
return;
}
String tableName = cmd.getArgs()[0];
HTable table = new HTable(conf, tableName);
HBaseAdmin admin = new HBaseAdmin(conf);
Map<String, HRegionContent> regionMap = getRegionMap(table, admin);
int count = 0;
int fileSize = 0;
for (HRegionContent rc : regionMap.values()) {
count++;
fileSize += rc.getTotalSizeMB();
}
System.out.println("region map size: " + regionMap.size());
System.out.println("file size :" + fileSize);
}
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;
}