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Posted to commits@cassandra.apache.org by db...@apache.org on 2015/04/08 02:14:57 UTC

[4/5] cassandra git commit: Move NodeToolCmd subclasses to their own package patch by dbrosius reviewed yukim for cassandra-8995

http://git-wip-us.apache.org/repos/asf/cassandra/blob/c5a81900/src/java/org/apache/cassandra/tools/NodeTool.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/tools/NodeTool.java b/src/java/org/apache/cassandra/tools/NodeTool.java
index 49a19ce..3cc307b 100644
--- a/src/java/org/apache/cassandra/tools/NodeTool.java
+++ b/src/java/org/apache/cassandra/tools/NodeTool.java
@@ -18,17 +18,11 @@
 package org.apache.cassandra.tools;
 
 import java.io.*;
-import java.lang.management.MemoryUsage;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
-import java.text.DecimalFormat;
 import java.text.SimpleDateFormat;
 import java.util.*;
 import java.util.Map.Entry;
-import java.util.concurrent.ExecutionException;
-
-import javax.management.InstanceNotFoundException;
-import javax.management.openmbean.*;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Throwables;
@@ -36,32 +30,10 @@ import com.google.common.collect.*;
 
 import io.airlift.command.*;
 
-import org.apache.commons.lang3.ArrayUtils;
-import org.apache.commons.lang3.StringUtils;
-
-import org.apache.cassandra.concurrent.Stage;
-import org.apache.cassandra.db.ColumnFamilyStoreMBean;
-import org.apache.cassandra.db.SystemKeyspace;
-import org.apache.cassandra.db.compaction.CompactionManagerMBean;
-import org.apache.cassandra.db.compaction.OperationType;
-import org.apache.cassandra.io.util.FileUtils;
 import org.apache.cassandra.locator.EndpointSnitchInfoMBean;
-import org.apache.cassandra.metrics.CassandraMetricsRegistry;
-import org.apache.cassandra.metrics.ColumnFamilyMetrics;
-import org.apache.cassandra.net.MessagingServiceMBean;
-import org.apache.cassandra.repair.messages.RepairOption;
-import org.apache.cassandra.repair.RepairParallelism;
-import org.apache.cassandra.service.CacheServiceMBean;
-import org.apache.cassandra.streaming.ProgressInfo;
-import org.apache.cassandra.streaming.SessionInfo;
-import org.apache.cassandra.streaming.StreamState;
-import org.apache.cassandra.utils.EstimatedHistogram;
+import org.apache.cassandra.tools.nodetool.*;
 import org.apache.cassandra.utils.FBUtilities;
-import org.apache.cassandra.utils.JVMStabilityInspector;
 
-import static org.apache.cassandra.metrics.ColumnFamilyMetrics.Sampler;
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkState;
 import static com.google.common.base.Throwables.getStackTraceAsString;
 import static com.google.common.collect.Iterables.toArray;
 import static com.google.common.collect.Lists.newArrayList;
@@ -360,2402 +332,26 @@ public class NodeTool
         }
     }
 
-    @Command(name = "info", description = "Print node information (uptime, load, ...)")
-    public static class Info extends NodeToolCmd
-    {
-        @Option(name = {"-T", "--tokens"}, description = "Display all tokens")
-        private boolean tokens = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            boolean gossipInitialized = probe.isInitialized();
-
-            System.out.printf("%-23s: %s%n", "ID", probe.getLocalHostId());
-            System.out.printf("%-23s: %s%n", "Gossip active", gossipInitialized);
-            System.out.printf("%-23s: %s%n", "Thrift active", probe.isThriftServerRunning());
-            System.out.printf("%-23s: %s%n", "Native Transport active", probe.isNativeTransportRunning());
-            System.out.printf("%-23s: %s%n", "Load", probe.getLoadString());
-            if (gossipInitialized)
-                System.out.printf("%-23s: %s%n", "Generation No", probe.getCurrentGenerationNumber());
-            else
-                System.out.printf("%-23s: %s%n", "Generation No", 0);
-
-            // Uptime
-            long secondsUp = probe.getUptime() / 1000;
-            System.out.printf("%-23s: %d%n", "Uptime (seconds)", secondsUp);
-
-            // Memory usage
-            MemoryUsage heapUsage = probe.getHeapMemoryUsage();
-            double memUsed = (double) heapUsage.getUsed() / (1024 * 1024);
-            double memMax = (double) heapUsage.getMax() / (1024 * 1024);
-            System.out.printf("%-23s: %.2f / %.2f%n", "Heap Memory (MB)", memUsed, memMax);
-            try
-            {
-                System.out.printf("%-23s: %.2f%n", "Off Heap Memory (MB)", getOffHeapMemoryUsed(probe));
-            }
-            catch (RuntimeException e)
-            {
-                // offheap-metrics introduced in 2.1.3 - older versions do not have the appropriate mbeans
-                if (!(e.getCause() instanceof InstanceNotFoundException))
-                    throw e;
-            }
-
-            // Data Center/Rack
-            System.out.printf("%-23s: %s%n", "Data Center", probe.getDataCenter());
-            System.out.printf("%-23s: %s%n", "Rack", probe.getRack());
-
-            // Exceptions
-            System.out.printf("%-23s: %s%n", "Exceptions", probe.getStorageMetric("Exceptions"));
-
-            CacheServiceMBean cacheService = probe.getCacheServiceMBean();
-
-            // Key Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds
-            System.out.printf("%-23s: entries %d, size %s, capacity %s, %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n",
-                    "Key Cache",
-                    probe.getCacheMetric("KeyCache", "Entries"),
-                    FileUtils.stringifyFileSize((long) probe.getCacheMetric("KeyCache", "Size")),
-                    FileUtils.stringifyFileSize((long) probe.getCacheMetric("KeyCache", "Capacity")),
-                    probe.getCacheMetric("KeyCache", "Hits"),
-                    probe.getCacheMetric("KeyCache", "Requests"),
-                    probe.getCacheMetric("KeyCache", "HitRate"),
-                    cacheService.getKeyCacheSavePeriodInSeconds());
-
-            // Row Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds
-            System.out.printf("%-23s: entries %d, size %s, capacity %s, %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n",
-                    "Row Cache",
-                    probe.getCacheMetric("RowCache", "Entries"),
-                    FileUtils.stringifyFileSize((long) probe.getCacheMetric("RowCache", "Size")),
-                    FileUtils.stringifyFileSize((long) probe.getCacheMetric("RowCache", "Capacity")),
-                    probe.getCacheMetric("RowCache", "Hits"),
-                    probe.getCacheMetric("RowCache", "Requests"),
-                    probe.getCacheMetric("RowCache", "HitRate"),
-                    cacheService.getRowCacheSavePeriodInSeconds());
-
-            // Counter Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds
-            System.out.printf("%-23s: entries %d, size %s, capacity %s, %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n",
-                    "Counter Cache",
-                    probe.getCacheMetric("CounterCache", "Entries"),
-                    FileUtils.stringifyFileSize((long) probe.getCacheMetric("CounterCache", "Size")),
-                    FileUtils.stringifyFileSize((long) probe.getCacheMetric("CounterCache", "Capacity")),
-                    probe.getCacheMetric("CounterCache", "Hits"),
-                    probe.getCacheMetric("CounterCache", "Requests"),
-                    probe.getCacheMetric("CounterCache", "HitRate"),
-                    cacheService.getCounterCacheSavePeriodInSeconds());
-
-            // Tokens
-            List<String> tokens = probe.getTokens();
-            if (tokens.size() == 1 || this.tokens)
-                for (String token : tokens)
-                    System.out.printf("%-23s: %s%n", "Token", token);
-            else
-                System.out.printf("%-23s: (invoke with -T/--tokens to see all %d tokens)%n", "Token", tokens.size());
-        }
-
-        /**
-         * Returns the total off heap memory used in MB.
-         * @return the total off heap memory used in MB.
-         */
-        private static double getOffHeapMemoryUsed(NodeProbe probe)
-        {
-            long offHeapMemUsedInBytes = 0;
-            // get a list of column family stores
-            Iterator<Map.Entry<String, ColumnFamilyStoreMBean>> cfamilies = probe.getColumnFamilyStoreMBeanProxies();
-
-            while (cfamilies.hasNext())
-            {
-                Entry<String, ColumnFamilyStoreMBean> entry = cfamilies.next();
-                String keyspaceName = entry.getKey();
-                String cfName = entry.getValue().getColumnFamilyName();
-
-                offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableOffHeapSize");
-                offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "BloomFilterOffHeapMemoryUsed");
-                offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "IndexSummaryOffHeapMemoryUsed");
-                offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "CompressionMetadataOffHeapMemoryUsed");
-            }
-
-            return offHeapMemUsedInBytes / (1024d * 1024);
-        }
-    }
-
-    @Command(name = "ring", description = "Print information about the token ring")
-    public static class Ring extends NodeToolCmd
-    {
-        @Arguments(description = "Specify a keyspace for accurate ownership information (topology awareness)")
-        private String keyspace = null;
-
-        @Option(title = "resolve_ip", name = {"-r", "--resolve-ip"}, description = "Show node domain names instead of IPs")
-        private boolean resolveIp = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            Map<String, String> tokensToEndpoints = probe.getTokenToEndpointMap();
-            LinkedHashMultimap<String, String> endpointsToTokens = LinkedHashMultimap.create();
-            boolean haveVnodes = false;
-            for (Map.Entry<String, String> entry : tokensToEndpoints.entrySet())
-            {
-                haveVnodes |= endpointsToTokens.containsKey(entry.getValue());
-                endpointsToTokens.put(entry.getValue(), entry.getKey());
-            }
-
-            int maxAddressLength = Collections.max(endpointsToTokens.keys(), new Comparator<String>()
-            {
-                @Override
-                public int compare(String first, String second)
-                {
-                    return ((Integer) first.length()).compareTo(second.length());
-                }
-            }).length();
-
-            String formatPlaceholder = "%%-%ds  %%-12s%%-7s%%-8s%%-16s%%-20s%%-44s%%n";
-            String format = format(formatPlaceholder, maxAddressLength);
-
-            StringBuffer errors = new StringBuffer();
-            boolean showEffectiveOwnership = true;
-            // Calculate per-token ownership of the ring
-            Map<InetAddress, Float> ownerships;
-            try
-            {
-                ownerships = probe.effectiveOwnership(keyspace);
-            }
-            catch (IllegalStateException ex)
-            {
-                ownerships = probe.getOwnership();
-                errors.append("Note: " + ex.getMessage() + "%n");
-                showEffectiveOwnership = false;
-            }
-            catch (IllegalArgumentException ex)
-            {
-                System.out.printf("%nError: " + ex.getMessage() + "%n");
-                return;
-            }
-
-
-            System.out.println();
-            for (Entry<String, SetHostStat> entry : getOwnershipByDc(probe, resolveIp, tokensToEndpoints, ownerships).entrySet())
-                printDc(probe, format, entry.getKey(), endpointsToTokens, entry.getValue(),showEffectiveOwnership);
-
-            if (haveVnodes)
-            {
-                System.out.println("  Warning: \"nodetool ring\" is used to output all the tokens of a node.");
-                System.out.println("  To view status related info of a node use \"nodetool status\" instead.\n");
-            }
-
-            System.out.printf("%n  " + errors.toString());
-        }
-
-        private void printDc(NodeProbe probe, String format,
-                             String dc,
-                             LinkedHashMultimap<String, String> endpointsToTokens,
-                             SetHostStat hoststats,boolean showEffectiveOwnership)
-        {
-            Collection<String> liveNodes = probe.getLiveNodes();
-            Collection<String> deadNodes = probe.getUnreachableNodes();
-            Collection<String> joiningNodes = probe.getJoiningNodes();
-            Collection<String> leavingNodes = probe.getLeavingNodes();
-            Collection<String> movingNodes = probe.getMovingNodes();
-            Map<String, String> loadMap = probe.getLoadMap();
-
-            System.out.println("Datacenter: " + dc);
-            System.out.println("==========");
-
-            // get the total amount of replicas for this dc and the last token in this dc's ring
-            List<String> tokens = new ArrayList<>();
-            String lastToken = "";
-
-            for (HostStat stat : hoststats)
-            {
-                tokens.addAll(endpointsToTokens.get(stat.endpoint.getHostAddress()));
-                lastToken = tokens.get(tokens.size() - 1);
-            }
-
-            System.out.printf(format, "Address", "Rack", "Status", "State", "Load", "Owns", "Token");
-
-            if (hoststats.size() > 1)
-                System.out.printf(format, "", "", "", "", "", "", lastToken);
-            else
-                System.out.println();
-
-            for (HostStat stat : hoststats)
-            {
-                String endpoint = stat.endpoint.getHostAddress();
-                String rack;
-                try
-                {
-                    rack = probe.getEndpointSnitchInfoProxy().getRack(endpoint);
-                }
-                catch (UnknownHostException e)
-                {
-                    rack = "Unknown";
-                }
-
-                String status = liveNodes.contains(endpoint)
-                        ? "Up"
-                        : deadNodes.contains(endpoint)
-                                ? "Down"
-                                : "?";
-
-                String state = "Normal";
-
-                if (joiningNodes.contains(endpoint))
-                    state = "Joining";
-                else if (leavingNodes.contains(endpoint))
-                    state = "Leaving";
-                else if (movingNodes.contains(endpoint))
-                    state = "Moving";
-
-                String load = loadMap.containsKey(endpoint)
-                        ? loadMap.get(endpoint)
-                        : "?";
-                String owns = stat.owns != null && showEffectiveOwnership? new DecimalFormat("##0.00%").format(stat.owns) : "?";
-                System.out.printf(format, stat.ipOrDns(), rack, status, state, load, owns, stat.token);
-            }
-            System.out.println();
-        }
-    }
-
-    @Command(name = "netstats", description = "Print network information on provided host (connecting node by default)")
-    public static class NetStats extends NodeToolCmd
-    {
-        @Option(title = "human_readable",
-                name = {"-H", "--human-readable"},
-                description = "Display bytes in human readable form, i.e. KB, MB, GB, TB")
-        private boolean humanReadable = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            System.out.printf("Mode: %s%n", probe.getOperationMode());
-            Set<StreamState> statuses = probe.getStreamStatus();
-            if (statuses.isEmpty())
-                System.out.println("Not sending any streams.");
-            for (StreamState status : statuses)
-            {
-                System.out.printf("%s %s%n", status.description, status.planId.toString());
-                for (SessionInfo info : status.sessions)
-                {
-                    System.out.printf("    %s", info.peer.toString());
-                    // print private IP when it is used
-                    if (!info.peer.equals(info.connecting))
-                    {
-                        System.out.printf(" (using %s)", info.connecting.toString());
-                    }
-                    System.out.printf("%n");
-                    if (!info.receivingSummaries.isEmpty())
-                    {
-                        if (humanReadable)
-                            System.out.printf("        Receiving %d files, %s total. Already received %d files, %s total%n", info.getTotalFilesToReceive(), FileUtils.stringifyFileSize(info.getTotalSizeToReceive()), info.getTotalFilesReceived(), FileUtils.stringifyFileSize(info.getTotalSizeReceived()));
-                        else
-                            System.out.printf("        Receiving %d files, %d bytes total. Already received %d files, %d bytes total%n", info.getTotalFilesToReceive(), info.getTotalSizeToReceive(), info.getTotalFilesReceived(), info.getTotalSizeReceived());
-                        for (ProgressInfo progress : info.getReceivingFiles())
-                        {
-                            System.out.printf("            %s%n", progress.toString());
-                        }
-                    }
-                    if (!info.sendingSummaries.isEmpty())
-                    {
-                        if (humanReadable)
-                            System.out.printf("        Sending %d files, %s total. Already sent %d files, %s total%n", info.getTotalFilesToSend(), FileUtils.stringifyFileSize(info.getTotalSizeToSend()), info.getTotalFilesSent(), FileUtils.stringifyFileSize(info.getTotalSizeSent()));
-                        else
-                            System.out.printf("        Sending %d files, %d bytes total. Already sent %d files, %d bytes total%n", info.getTotalFilesToSend(), info.getTotalSizeToSend(), info.getTotalFilesSent(), info.getTotalSizeSent());
-                        for (ProgressInfo progress : info.getSendingFiles())
-                        {
-                            System.out.printf("            %s%n", progress.toString());
-                        }
-                    }
-                }
-            }
-
-            if (!probe.isStarting())
-            {
-                System.out.printf("Read Repair Statistics:%nAttempted: %d%nMismatch (Blocking): %d%nMismatch (Background): %d%n", probe.getReadRepairAttempted(), probe.getReadRepairRepairedBlocking(), probe.getReadRepairRepairedBackground());
-
-                MessagingServiceMBean ms = probe.msProxy;
-                System.out.printf("%-25s", "Pool Name");
-                System.out.printf("%10s", "Active");
-                System.out.printf("%10s", "Pending");
-                System.out.printf("%15s%n", "Completed");
-
-                int pending;
-                long completed;
-
-                pending = 0;
-                for (int n : ms.getLargeMessagePendingTasks().values())
-                    pending += n;
-                completed = 0;
-                for (long n : ms.getLargeMessageCompletedTasks().values())
-                    completed += n;
-                System.out.printf("%-25s%10s%10s%15s%n", "Large messages", "n/a", pending, completed);
-
-                pending = 0;
-                for (int n : ms.getSmallMessagePendingTasks().values())
-                    pending += n;
-                completed = 0;
-                for (long n : ms.getSmallMessageCompletedTasks().values())
-                    completed += n;
-                System.out.printf("%-25s%10s%10s%15s%n", "Small messages", "n/a", pending, completed);
-            }
-        }
-    }
-
-    @Command(name = "cfstats", description = "Print statistics on tables")
-    public static class CfStats extends NodeToolCmd
+    public static Map<String, SetHostStat> getOwnershipByDc(NodeProbe probe, boolean resolveIp,
+                                                             Map<String, String> tokenToEndpoint,
+                                                             Map<InetAddress, Float> ownerships)
     {
-        @Arguments(usage = "[<keyspace.table>...]", description = "List of tables (or keyspace) names")
-        private List<String> cfnames = new ArrayList<>();
-
-        @Option(name = "-i", description = "Ignore the list of tables and display the remaining cfs")
-        private boolean ignore = false;
-
-        @Option(title = "human_readable",
-                name = {"-H", "--human-readable"},
-                description = "Display bytes in human readable form, i.e. KB, MB, GB, TB")
-        private boolean humanReadable = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            OptionFilter filter = new OptionFilter(ignore, cfnames);
-            Map<String, List<ColumnFamilyStoreMBean>> cfstoreMap = new HashMap<>();
-
-            // get a list of column family stores
-            Iterator<Map.Entry<String, ColumnFamilyStoreMBean>> cfamilies = probe.getColumnFamilyStoreMBeanProxies();
-
-            while (cfamilies.hasNext())
-            {
-                Map.Entry<String, ColumnFamilyStoreMBean> entry = cfamilies.next();
-                String keyspaceName = entry.getKey();
-                ColumnFamilyStoreMBean cfsProxy = entry.getValue();
-
-                if (!cfstoreMap.containsKey(keyspaceName) && filter.isColumnFamilyIncluded(entry.getKey(), cfsProxy.getColumnFamilyName()))
-                {
-                    List<ColumnFamilyStoreMBean> columnFamilies = new ArrayList<>();
-                    columnFamilies.add(cfsProxy);
-                    cfstoreMap.put(keyspaceName, columnFamilies);
-                } else if (filter.isColumnFamilyIncluded(entry.getKey(), cfsProxy.getColumnFamilyName()))
-                {
-                    cfstoreMap.get(keyspaceName).add(cfsProxy);
-                }
-            }
-
-            // make sure all specified kss and cfs exist
-            filter.verifyKeyspaces(probe.getKeyspaces());
-            filter.verifyColumnFamilies();
-
-            // print out the table statistics
-            for (Map.Entry<String, List<ColumnFamilyStoreMBean>> entry : cfstoreMap.entrySet())
-            {
-                String keyspaceName = entry.getKey();
-                List<ColumnFamilyStoreMBean> columnFamilies = entry.getValue();
-                long keyspaceReadCount = 0;
-                long keyspaceWriteCount = 0;
-                int keyspacePendingFlushes = 0;
-                double keyspaceTotalReadTime = 0.0f;
-                double keyspaceTotalWriteTime = 0.0f;
-
-                System.out.println("Keyspace: " + keyspaceName);
-                for (ColumnFamilyStoreMBean cfstore : columnFamilies)
-                {
-                    String cfName = cfstore.getColumnFamilyName();
-                    long writeCount = ((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteLatency")).getCount();
-                    long readCount = ((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadLatency")).getCount();
-
-                    if (readCount > 0)
-                    {
-                        keyspaceReadCount += readCount;
-                        keyspaceTotalReadTime += (long) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadTotalLatency");
-                    }
-                    if (writeCount > 0)
-                    {
-                        keyspaceWriteCount += writeCount;
-                        keyspaceTotalWriteTime += (long) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteTotalLatency");
-                    }
-                    keyspacePendingFlushes += (long) probe.getColumnFamilyMetric(keyspaceName, cfName, "PendingFlushes");
-                }
-
-                double keyspaceReadLatency = keyspaceReadCount > 0
-                                             ? keyspaceTotalReadTime / keyspaceReadCount / 1000
-                                             : Double.NaN;
-                double keyspaceWriteLatency = keyspaceWriteCount > 0
-                                              ? keyspaceTotalWriteTime / keyspaceWriteCount / 1000
-                                              : Double.NaN;
-
-                System.out.println("\tRead Count: " + keyspaceReadCount);
-                System.out.println("\tRead Latency: " + String.format("%s", keyspaceReadLatency) + " ms.");
-                System.out.println("\tWrite Count: " + keyspaceWriteCount);
-                System.out.println("\tWrite Latency: " + String.format("%s", keyspaceWriteLatency) + " ms.");
-                System.out.println("\tPending Flushes: " + keyspacePendingFlushes);
-
-                // print out column family statistics for this keyspace
-                for (ColumnFamilyStoreMBean cfstore : columnFamilies)
-                {
-                    String cfName = cfstore.getColumnFamilyName();
-                    if (cfName.contains("."))
-                        System.out.println("\t\tTable (index): " + cfName);
-                    else
-                        System.out.println("\t\tTable: " + cfName);
-
-                    System.out.println("\t\tSSTable count: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "LiveSSTableCount"));
-
-                    int[] leveledSStables = cfstore.getSSTableCountPerLevel();
-                    if (leveledSStables != null)
-                    {
-                        System.out.print("\t\tSSTables in each level: [");
-                        for (int level = 0; level < leveledSStables.length; level++)
-                        {
-                            int count = leveledSStables[level];
-                            System.out.print(count);
-                            long maxCount = 4L; // for L0
-                            if (level > 0)
-                                maxCount = (long) Math.pow(10, level);
-                            //  show max threshold for level when exceeded
-                            if (count > maxCount)
-                                System.out.print("/" + maxCount);
-
-                            if (level < leveledSStables.length - 1)
-                                System.out.print(", ");
-                            else
-                                System.out.println("]");
-                        }
-                    }
-
-                    Long memtableOffHeapSize = null;
-                    Long bloomFilterOffHeapSize = null;
-                    Long indexSummaryOffHeapSize = null;
-                    Long compressionMetadataOffHeapSize = null;
-
-                    Long offHeapSize = null;
-
-                    try
-                    {
-                        memtableOffHeapSize = (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableOffHeapSize");
-                        bloomFilterOffHeapSize = (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "BloomFilterOffHeapMemoryUsed");
-                        indexSummaryOffHeapSize = (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "IndexSummaryOffHeapMemoryUsed");
-                        compressionMetadataOffHeapSize = (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "CompressionMetadataOffHeapMemoryUsed");
-
-                        offHeapSize = memtableOffHeapSize + bloomFilterOffHeapSize + indexSummaryOffHeapSize + compressionMetadataOffHeapSize;
-                    }
-                    catch (RuntimeException e)
-                    {
-                        // offheap-metrics introduced in 2.1.3 - older versions do not have the appropriate mbeans
-                        if (!(e.getCause() instanceof InstanceNotFoundException))
-                            throw e;
-                    }
-
-                    System.out.println("\t\tSpace used (live): " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "LiveDiskSpaceUsed"), humanReadable));
-                    System.out.println("\t\tSpace used (total): " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "TotalDiskSpaceUsed"), humanReadable));
-                    System.out.println("\t\tSpace used by snapshots (total): " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "SnapshotsSize"), humanReadable));
-                    if (offHeapSize != null)
-                        System.out.println("\t\tOff heap memory used (total): " + format(offHeapSize, humanReadable));
-                    System.out.println("\t\tSSTable Compression Ratio: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "CompressionRatio"));
-                    long numberOfKeys = 0;
-                    for (long keys : (long[]) probe.getColumnFamilyMetric(keyspaceName, cfName, "EstimatedColumnCountHistogram"))
-                        numberOfKeys += keys;
-                    System.out.println("\t\tNumber of keys (estimate): " + numberOfKeys);
-                    System.out.println("\t\tMemtable cell count: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableColumnsCount"));
-                    System.out.println("\t\tMemtable data size: " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableLiveDataSize"), humanReadable));
-                    if (memtableOffHeapSize != null)
-                        System.out.println("\t\tMemtable off heap memory used: " + format(memtableOffHeapSize, humanReadable));
-                    System.out.println("\t\tMemtable switch count: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableSwitchCount"));
-                    System.out.println("\t\tLocal read count: " + ((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadLatency")).getCount());
-                    double localReadLatency = ((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadLatency")).getMean() / 1000;
-                    double localRLatency = localReadLatency > 0 ? localReadLatency : Double.NaN;
-                    System.out.printf("\t\tLocal read latency: %01.3f ms%n", localRLatency);
-                    System.out.println("\t\tLocal write count: " + ((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteLatency")).getCount());
-                    double localWriteLatency = ((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteLatency")).getMean() / 1000;
-                    double localWLatency = localWriteLatency > 0 ? localWriteLatency : Double.NaN;
-                    System.out.printf("\t\tLocal write latency: %01.3f ms%n", localWLatency);
-                    System.out.println("\t\tPending flushes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "PendingFlushes"));
-                    System.out.println("\t\tBloom filter false positives: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "BloomFilterFalsePositives"));
-                    System.out.printf("\t\tBloom filter false ratio: %s%n", String.format("%01.5f", probe.getColumnFamilyMetric(keyspaceName, cfName, "RecentBloomFilterFalseRatio")));
-                    System.out.println("\t\tBloom filter space used: " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "BloomFilterDiskSpaceUsed"), humanReadable));
-                    if (bloomFilterOffHeapSize != null)
-                        System.out.println("\t\tBloom filter off heap memory used: " + format(bloomFilterOffHeapSize, humanReadable));
-                    if (indexSummaryOffHeapSize != null)
-                        System.out.println("\t\tIndex summary off heap memory used: " + format(indexSummaryOffHeapSize, humanReadable));
-                    if (compressionMetadataOffHeapSize != null)
-                        System.out.println("\t\tCompression metadata off heap memory used: " + format(compressionMetadataOffHeapSize, humanReadable));
-
-                    System.out.println("\t\tCompacted partition minimum bytes: " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "MinRowSize"), humanReadable));
-                    System.out.println("\t\tCompacted partition maximum bytes: " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "MaxRowSize"), humanReadable));
-                    System.out.println("\t\tCompacted partition mean bytes: " + format((Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "MeanRowSize"), humanReadable));
-                    CassandraMetricsRegistry.JmxHistogramMBean histogram = (CassandraMetricsRegistry.JmxHistogramMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "LiveScannedHistogram");
-                    System.out.println("\t\tAverage live cells per slice (last five minutes): " + histogram.getMean());
-                    System.out.println("\t\tMaximum live cells per slice (last five minutes): " + histogram.getMax());
-                    histogram = (CassandraMetricsRegistry.JmxHistogramMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "TombstoneScannedHistogram");
-                    System.out.println("\t\tAverage tombstones per slice (last five minutes): " + histogram.getMean());
-                    System.out.println("\t\tMaximum tombstones per slice (last five minutes): " + histogram.getMax());
-
-                    System.out.println("");
-                }
-                System.out.println("----------------");
-            }
-        }
-
-        private String format(long bytes, boolean humanReadable) {
-            return humanReadable ? FileUtils.stringifyFileSize(bytes) : Long.toString(bytes);
-        }
-
-        /**
-         * Used for filtering keyspaces and columnfamilies to be displayed using the cfstats command.
-         */
-        private static class OptionFilter
+        Map<String, SetHostStat> ownershipByDc = Maps.newLinkedHashMap();
+        EndpointSnitchInfoMBean epSnitchInfo = probe.getEndpointSnitchInfoProxy();
+        try
         {
-            private Map<String, List<String>> filter = new HashMap<>();
-            private Map<String, List<String>> verifier = new HashMap<>();
-            private List<String> filterList = new ArrayList<>();
-            private boolean ignoreMode;
-
-            public OptionFilter(boolean ignoreMode, List<String> filterList)
-            {
-                this.filterList.addAll(filterList);
-                this.ignoreMode = ignoreMode;
-
-                for (String s : filterList)
-                {
-                    String[] keyValues = s.split("\\.", 2);
-
-                    // build the map that stores the ks' and cfs to use
-                    if (!filter.containsKey(keyValues[0]))
-                    {
-                        filter.put(keyValues[0], new ArrayList<String>());
-                        verifier.put(keyValues[0], new ArrayList<String>());
-
-                        if (keyValues.length == 2)
-                        {
-                            filter.get(keyValues[0]).add(keyValues[1]);
-                            verifier.get(keyValues[0]).add(keyValues[1]);
-                        }
-                    } else
-                    {
-                        if (keyValues.length == 2)
-                        {
-                            filter.get(keyValues[0]).add(keyValues[1]);
-                            verifier.get(keyValues[0]).add(keyValues[1]);
-                        }
-                    }
-                }
-            }
-
-            public boolean isColumnFamilyIncluded(String keyspace, String columnFamily)
-            {
-                // supplying empty params list is treated as wanting to display all kss & cfs
-                if (filterList.isEmpty())
-                    return !ignoreMode;
-
-                List<String> cfs = filter.get(keyspace);
-
-                // no such keyspace is in the map
-                if (cfs == null)
-                    return ignoreMode;
-                    // only a keyspace with no cfs was supplied
-                    // so ignore or include (based on the flag) every column family in specified keyspace
-                else if (cfs.size() == 0)
-                    return !ignoreMode;
-
-                // keyspace exists, and it contains specific cfs
-                verifier.get(keyspace).remove(columnFamily);
-                return ignoreMode ^ cfs.contains(columnFamily);
-            }
-
-            public void verifyKeyspaces(List<String> keyspaces)
-            {
-                for (String ks : verifier.keySet())
-                    if (!keyspaces.contains(ks))
-                        throw new IllegalArgumentException("Unknown keyspace: " + ks);
-            }
-
-            public void verifyColumnFamilies()
+            for (Entry<String, String> tokenAndEndPoint : tokenToEndpoint.entrySet())
             {
-                for (String ks : filter.keySet())
-                    if (verifier.get(ks).size() > 0)
-                        throw new IllegalArgumentException("Unknown tables: " + verifier.get(ks) + " in keyspace: " + ks);
+                String dc = epSnitchInfo.getDatacenter(tokenAndEndPoint.getValue());
+                if (!ownershipByDc.containsKey(dc))
+                    ownershipByDc.put(dc, new SetHostStat(resolveIp));
+                ownershipByDc.get(dc).add(tokenAndEndPoint.getKey(), tokenAndEndPoint.getValue(), ownerships);
             }
         }
-    }
-
-    @Command(name = "toppartitions", description = "Sample and print the most active partitions for a given column family")
-    public static class TopPartitions extends NodeToolCmd
-    {
-        @Arguments(usage = "<keyspace> <cfname> <duration>", description = "The keyspace, column family name, and duration in milliseconds")
-        private List<String> args = new ArrayList<>();
-        @Option(name = "-s", description = "Capacity of stream summary, closer to the actual cardinality of partitions will yield more accurate results (Default: 256)")
-        private int size = 256;
-        @Option(name = "-k", description = "Number of the top partitions to list (Default: 10)")
-        private int topCount = 10;
-        @Option(name = "-a", description = "Comma separated list of samplers to use (Default: all)")
-        private String samplers = join(ColumnFamilyMetrics.Sampler.values(), ',');
-        @Override
-        public void execute(NodeProbe probe)
+        catch (UnknownHostException e)
         {
-            checkArgument(args.size() == 3, "toppartitions requires keyspace, column family name, and duration");
-            checkArgument(topCount < size, "TopK count (-k) option must be smaller then the summary capacity (-s)");
-            String keyspace = args.get(0);
-            String cfname = args.get(1);
-            Integer duration = Integer.parseInt(args.get(2));
-            // generate the list of samplers
-            List<Sampler> targets = Lists.newArrayList();
-            for (String s : samplers.split(","))
-            {
-                try
-                {
-                    targets.add(Sampler.valueOf(s.toUpperCase()));
-                } catch (Exception e)
-                {
-                    throw new IllegalArgumentException(s + " is not a valid sampler, choose one of: " + join(Sampler.values(), ", "));
-                }
-            }
-
-            Map<Sampler, CompositeData> results;
-            try
-            {
-                results = probe.getPartitionSample(keyspace, cfname, size, duration, topCount, targets);
-            } catch (OpenDataException e)
-            {
-                throw new RuntimeException(e);
-            }
-            boolean first = true;
-            for(Entry<Sampler, CompositeData> result : results.entrySet())
-            {
-                CompositeData sampling = result.getValue();
-                // weird casting for http://bugs.sun.com/view_bug.do?bug_id=6548436
-                List<CompositeData> topk = (List<CompositeData>) (Object) Lists.newArrayList(((TabularDataSupport) sampling.get("partitions")).values());
-                Collections.sort(topk, new Ordering<CompositeData>()
-                {
-                    public int compare(CompositeData left, CompositeData right)
-                    {
-                        return Long.compare((long) right.get("count"), (long) left.get("count"));
-                    }
-                });
-                if(!first)
-                    System.out.println();
-                System.out.println(result.getKey().toString()+ " Sampler:");
-                System.out.printf("  Cardinality: ~%d (%d capacity)%n", (long) sampling.get("cardinality"), size);
-                System.out.printf("  Top %d partitions:%n", topCount);
-                if (topk.size() == 0)
-                {
-                    System.out.println("\tNothing recorded during sampling period...");
-                } else
-                {
-                    int offset = 0;
-                    for (CompositeData entry : topk)
-                        offset = Math.max(offset, entry.get("string").toString().length());
-                    System.out.printf("\t%-" + offset + "s%10s%10s%n", "Partition", "Count", "+/-");
-                    for (CompositeData entry : topk)
-                        System.out.printf("\t%-" + offset + "s%10d%10d%n", entry.get("string").toString(), entry.get("count"), entry.get("error"));
-                }
-                first = false;
-            }
-        }
-    }
-
-    @Command(name = "cfhistograms", description = "Print statistic histograms for a given column family")
-    public static class CfHistograms extends NodeToolCmd
-    {
-        @Arguments(usage = "<keyspace> <table>", description = "The keyspace and table name")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() == 2, "cfhistograms requires ks and cf args");
-
-            String keyspace = args.get(0);
-            String cfname = args.get(1);
-
-            // calculate percentile of row size and column count
-            long[] estimatedRowSize = (long[]) probe.getColumnFamilyMetric(keyspace, cfname, "EstimatedRowSizeHistogram");
-            long[] estimatedColumnCount = (long[]) probe.getColumnFamilyMetric(keyspace, cfname, "EstimatedColumnCountHistogram");
-
-            // build arrays to store percentile values
-            double[] estimatedRowSizePercentiles = new double[7];
-            double[] estimatedColumnCountPercentiles = new double[7];
-            double[] offsetPercentiles = new double[]{0.5, 0.75, 0.95, 0.98, 0.99};
-
-            if (ArrayUtils.isEmpty(estimatedRowSize) || ArrayUtils.isEmpty(estimatedColumnCount))
-            {
-                System.err.println("No SSTables exists, unable to calculate 'Partition Size' and 'Cell Count' percentiles");
-
-                for (int i = 0; i < 7; i++)
-                {
-                    estimatedRowSizePercentiles[i] = Double.NaN;
-                    estimatedColumnCountPercentiles[i] = Double.NaN;
-                }
-            }
-            else
-            {
-                long[] rowSizeBucketOffsets = new EstimatedHistogram(estimatedRowSize.length).getBucketOffsets();
-                long[] columnCountBucketOffsets = new EstimatedHistogram(estimatedColumnCount.length).getBucketOffsets();
-                EstimatedHistogram rowSizeHist = new EstimatedHistogram(rowSizeBucketOffsets, estimatedRowSize);
-                EstimatedHistogram columnCountHist = new EstimatedHistogram(columnCountBucketOffsets, estimatedColumnCount);
-
-                if (rowSizeHist.isOverflowed())
-                {
-                    System.err.println(String.format("Row sizes are larger than %s, unable to calculate percentiles", rowSizeBucketOffsets[rowSizeBucketOffsets.length - 1]));
-                    for (int i = 0; i < offsetPercentiles.length; i++)
-                            estimatedRowSizePercentiles[i] = Double.NaN;
-                }
-                else
-                {
-                    for (int i = 0; i < offsetPercentiles.length; i++)
-                        estimatedRowSizePercentiles[i] = rowSizeHist.percentile(offsetPercentiles[i]);
-                }
-
-                if (columnCountHist.isOverflowed())
-                {
-                    System.err.println(String.format("Column counts are larger than %s, unable to calculate percentiles", columnCountBucketOffsets[columnCountBucketOffsets.length - 1]));
-                    for (int i = 0; i < estimatedColumnCountPercentiles.length; i++)
-                        estimatedColumnCountPercentiles[i] = Double.NaN;
-                }
-                else
-                {
-                    for (int i = 0; i < offsetPercentiles.length; i++)
-                        estimatedColumnCountPercentiles[i] = columnCountHist.percentile(offsetPercentiles[i]);
-                }
-
-                // min value
-                estimatedRowSizePercentiles[5] = rowSizeHist.min();
-                estimatedColumnCountPercentiles[5] = columnCountHist.min();
-                // max value
-                estimatedRowSizePercentiles[6] = rowSizeHist.max();
-                estimatedColumnCountPercentiles[6] = columnCountHist.max();
-            }
-
-            String[] percentiles = new String[]{"50%", "75%", "95%", "98%", "99%", "Min", "Max"};
-            double[] readLatency = probe.metricPercentilesAsArray((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspace, cfname, "ReadLatency"));
-            double[] writeLatency = probe.metricPercentilesAsArray((CassandraMetricsRegistry.JmxTimerMBean) probe.getColumnFamilyMetric(keyspace, cfname, "WriteLatency"));
-            double[] sstablesPerRead = probe.metricPercentilesAsArray((CassandraMetricsRegistry.JmxHistogramMBean) probe.getColumnFamilyMetric(keyspace, cfname, "SSTablesPerReadHistogram"));
-
-            System.out.println(format("%s/%s histograms", keyspace, cfname));
-            System.out.println(format("%-10s%10s%18s%18s%18s%18s",
-                    "Percentile", "SSTables", "Write Latency", "Read Latency", "Partition Size", "Cell Count"));
-            System.out.println(format("%-10s%10s%18s%18s%18s%18s",
-                    "", "", "(micros)", "(micros)", "(bytes)", ""));
-
-            for (int i = 0; i < percentiles.length; i++)
-            {
-                System.out.println(format("%-10s%10.2f%18.2f%18.2f%18.0f%18.0f",
-                        percentiles[i],
-                        sstablesPerRead[i],
-                        writeLatency[i],
-                        readLatency[i],
-                        estimatedRowSizePercentiles[i],
-                        estimatedColumnCountPercentiles[i]));
-            }
-            System.out.println();
-        }
-    }
-
-    @Command(name = "cleanup", description = "Triggers the immediate cleanup of keys no longer belonging to a node. By default, clean all keyspaces")
-    public static class Cleanup extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                if (SystemKeyspace.NAME.equals(keyspace))
-                    continue;
-
-                try
-                {
-                    probe.forceKeyspaceCleanup(System.out, keyspace, cfnames);
-                } catch (Exception e)
-                {
-                    throw new RuntimeException("Error occurred during cleanup", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "clearsnapshot", description = "Remove the snapshot with the given name from the given keyspaces. If no snapshotName is specified we will remove all snapshots")
-    public static class ClearSnapshot extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspaces>...] ", description = "Remove snapshots from the given keyspaces")
-        private List<String> keyspaces = new ArrayList<>();
-
-        @Option(title = "snapshot_name", name = "-t", description = "Remove the snapshot with a given name")
-        private String snapshotName = EMPTY;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            StringBuilder sb = new StringBuilder();
-
-            sb.append("Requested clearing snapshot(s) for ");
-
-            if (keyspaces.isEmpty())
-                sb.append("[all keyspaces]");
-            else
-                sb.append("[").append(join(keyspaces, ", ")).append("]");
-
-            if (!snapshotName.isEmpty())
-                sb.append(" with snapshot name [").append(snapshotName).append("]");
-
-            System.out.println(sb.toString());
-
-            try
-            {
-                probe.clearSnapshot(snapshotName, toArray(keyspaces, String.class));
-            } catch (IOException e)
-            {
-                throw new RuntimeException("Error during clearing snapshots", e);
-            }
-        }
-    }
-
-    @Command(name = "compact", description = "Force a (major) compaction on one or more tables")
-    public static class Compact extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Option(title = "split_output", name = {"-s", "--split-output"}, description = "Use -s to not create a single big file")
-        private boolean splitOutput = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                try
-                {
-                    probe.forceKeyspaceCompaction(splitOutput, keyspace, cfnames);
-                } catch (Exception e)
-                {
-                    throw new RuntimeException("Error occurred during compaction", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "flush", description = "Flush one or more tables")
-    public static class Flush extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                try
-                {
-                    probe.forceKeyspaceFlush(keyspace, cfnames);
-                } catch (Exception e)
-                {
-                    throw new RuntimeException("Error occurred during flushing", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "scrub", description = "Scrub (rebuild sstables for) one or more tables")
-    public static class Scrub extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Option(title = "disable_snapshot",
-                name = {"-ns", "--no-snapshot"},
-                description = "Scrubbed CFs will be snapshotted first, if disableSnapshot is false. (default false)")
-        private boolean disableSnapshot = false;
-
-        @Option(title = "skip_corrupted",
-                name = {"-s", "--skip-corrupted"},
-                description = "Skip corrupted partitions even when scrubbing counter tables. (default false)")
-        private boolean skipCorrupted = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                try
-                {
-                    probe.scrub(System.out, disableSnapshot, skipCorrupted, keyspace, cfnames);
-                } catch (IllegalArgumentException e)
-                {
-                    throw e;
-                } catch (Exception e)
-                {
-                    throw new RuntimeException("Error occurred during scrubbing", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "verify", description = "Verify (check data checksum for) one or more tables")
-    public static class Verify extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Option(title = "extended_verify",
-            name = {"-e", "--extended-verify"},
-            description = "Verify each cell data, beyond simply checking sstable checksums")
-        private boolean extendedVerify = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                try
-                {
-                    probe.verify(System.out, extendedVerify, keyspace, cfnames);
-                } catch (Exception e)
-                {
-                    throw new RuntimeException("Error occurred during verifying", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "disableautocompaction", description = "Disable autocompaction for the given keyspace and table")
-    public static class DisableAutoCompaction extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                try
-                {
-                    probe.disableAutoCompaction(keyspace, cfnames);
-                } catch (IOException e)
-                {
-                    throw new RuntimeException("Error occurred during disabling auto-compaction", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "enableautocompaction", description = "Enable autocompaction for the given keyspace and table")
-    public static class EnableAutoCompaction extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                try
-                {
-                    probe.enableAutoCompaction(keyspace, cfnames);
-                } catch (IOException e)
-                {
-                    throw new RuntimeException("Error occurred during enabling auto-compaction", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "upgradesstables", description = "Rewrite sstables (for the requested tables) that are not on the current version (thus upgrading them to said current version)")
-    public static class UpgradeSSTable extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Option(title = "include_all", name = {"-a", "--include-all-sstables"}, description = "Use -a to include all sstables, even those already on the current version")
-        private boolean includeAll = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            for (String keyspace : keyspaces)
-            {
-                try
-                {
-                    probe.upgradeSSTables(System.out, keyspace, !includeAll, cfnames);
-                } catch (Exception e)
-                {
-                    throw new RuntimeException("Error occurred during enabling auto-compaction", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "compactionstats", description = "Print statistics on compactions")
-    public static class CompactionStats extends NodeToolCmd
-    {
-        @Option(title = "human_readable",
-                name = {"-H", "--human-readable"},
-                description = "Display bytes in human readable form, i.e. KB, MB, GB, TB")
-        private boolean humanReadable = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            CompactionManagerMBean cm = probe.getCompactionManagerProxy();
-            System.out.println("pending tasks: " + probe.getCompactionMetric("PendingTasks"));
-            long remainingBytes = 0;
-            List<Map<String, String>> compactions = cm.getCompactions();
-            if (!compactions.isEmpty())
-            {
-                int compactionThroughput = probe.getCompactionThroughput();
-                List<String[]> lines = new ArrayList<>();
-                int[] columnSizes = new int[] { 0, 0, 0, 0, 0, 0, 0 };
-
-                addLine(lines, columnSizes, "compaction type", "keyspace", "table", "completed", "total", "unit", "progress");
-                for (Map<String, String> c : compactions)
-                {
-                    long total = Long.parseLong(c.get("total"));
-                    long completed = Long.parseLong(c.get("completed"));
-                    String taskType = c.get("taskType");
-                    String keyspace = c.get("keyspace");
-                    String columnFamily = c.get("columnfamily");
-                    String completedStr = humanReadable ? FileUtils.stringifyFileSize(completed) : Long.toString(completed);
-                    String totalStr = humanReadable ? FileUtils.stringifyFileSize(total) : Long.toString(total);
-                    String unit = c.get("unit");
-                    String percentComplete = total == 0 ? "n/a" : new DecimalFormat("0.00").format((double) completed / total * 100) + "%";
-                    addLine(lines, columnSizes, taskType, keyspace, columnFamily, completedStr, totalStr, unit, percentComplete);
-                    if (taskType.equals(OperationType.COMPACTION.toString()))
-                        remainingBytes += total - completed;
-                }
-
-                StringBuilder buffer = new StringBuilder();
-                for (int columnSize : columnSizes) {
-                    buffer.append("%");
-                    buffer.append(columnSize + 3);
-                    buffer.append("s");
-                }
-                buffer.append("%n");
-                String format = buffer.toString();
-
-                for (String[] line : lines)
-                {
-                    System.out.printf(format, line[0], line[1], line[2], line[3], line[4], line[5], line[6]);
-                }
-
-                String remainingTime = "n/a";
-                if (compactionThroughput != 0)
-                {
-                    long remainingTimeInSecs = remainingBytes / (1024L * 1024L * compactionThroughput);
-                    remainingTime = format("%dh%02dm%02ds", remainingTimeInSecs / 3600, (remainingTimeInSecs % 3600) / 60, (remainingTimeInSecs % 60));
-                }
-                System.out.printf("%25s%10s%n", "Active compaction remaining time : ", remainingTime);
-            }
-        }
-
-        private void addLine(List<String[]> lines, int[] columnSizes, String... columns) {
-            lines.add(columns);
-            for (int i = 0; i < columns.length; i++) {
-                columnSizes[i] = Math.max(columnSizes[i], columns[i].length());
-            }
-        }
-    }
-
-    @Command(name = "compactionhistory", description = "Print history of compaction")
-    public static class CompactionHistory extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            System.out.println("Compaction History: ");
-
-            TabularData tabularData = probe.getCompactionHistory();
-            if (tabularData.isEmpty())
-            {
-                System.out.printf("There is no compaction history");
-                return;
-            }
-
-            String format = "%-41s%-19s%-29s%-26s%-15s%-15s%s%n";
-            List<String> indexNames = tabularData.getTabularType().getIndexNames();
-            System.out.printf(format, toArray(indexNames, Object.class));
-
-            Set<?> values = tabularData.keySet();
-            for (Object eachValue : values)
-            {
-                List<?> value = (List<?>) eachValue;
-                System.out.printf(format, toArray(value, Object.class));
-            }
-        }
-    }
-
-    @Command(name = "decommission", description = "Decommission the *node I am connecting to*")
-    public static class Decommission extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            try
-            {
-                probe.decommission();
-            } catch (InterruptedException e)
-            {
-                throw new RuntimeException("Error decommissioning node", e);
-            }
-        }
-    }
-
-    @Command(name = "describecluster", description = "Print the name, snitch, partitioner and schema version of a cluster")
-    public static class DescribeCluster extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            // display cluster name, snitch and partitioner
-            System.out.println("Cluster Information:");
-            System.out.println("\tName: " + probe.getClusterName());
-            System.out.println("\tSnitch: " + probe.getEndpointSnitchInfoProxy().getSnitchName());
-            System.out.println("\tPartitioner: " + probe.getPartitioner());
-
-            // display schema version for each node
-            System.out.println("\tSchema versions:");
-            Map<String, List<String>> schemaVersions = probe.getSpProxy().getSchemaVersions();
-            for (String version : schemaVersions.keySet())
-            {
-                System.out.println(format("\t\t%s: %s%n", version, schemaVersions.get(version)));
-            }
-        }
-    }
-
-    @Command(name = "disablebinary", description = "Disable native transport (binary protocol)")
-    public static class DisableBinary extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.stopNativeTransport();
-        }
-    }
-
-    @Command(name = "enablebinary", description = "Reenable native transport (binary protocol)")
-    public static class EnableBinary extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.startNativeTransport();
-        }
-    }
-
-    @Command(name = "enablegossip", description = "Reenable gossip")
-    public static class EnableGossip extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.startGossiping();
-        }
-    }
-
-    @Command(name = "disablegossip", description = "Disable gossip (effectively marking the node down)")
-    public static class DisableGossip extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.stopGossiping();
-        }
-    }
-
-    @Command(name = "enablehandoff", description = "Reenable the future hints storing on the current node")
-    public static class EnableHandoff extends NodeToolCmd
-    {
-        @Arguments(usage = "<dc-name>,<dc-name>", description = "Enable hinted handoff only for these DCs")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() <= 1, "enablehandoff does not accept two args");
-            if(args.size() == 1)
-                probe.enableHintedHandoff(args.get(0));
-            else
-                probe.enableHintedHandoff();
-        }
-    }
-
-    @Command(name = "enablethrift", description = "Reenable thrift server")
-    public static class EnableThrift extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.startThriftServer();
-        }
-    }
-
-    @Command(name = "getcompactionthreshold", description = "Print min and max compaction thresholds for a given table")
-    public static class GetCompactionThreshold extends NodeToolCmd
-    {
-        @Arguments(usage = "<keyspace> <table>", description = "The keyspace with a table")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() == 2, "getcompactionthreshold requires ks and cf args");
-            String ks = args.get(0);
-            String cf = args.get(1);
-
-            ColumnFamilyStoreMBean cfsProxy = probe.getCfsProxy(ks, cf);
-            System.out.println("Current compaction thresholds for " + ks + "/" + cf + ": \n" +
-                    " min = " + cfsProxy.getMinimumCompactionThreshold() + ", " +
-                    " max = " + cfsProxy.getMaximumCompactionThreshold());
-        }
-    }
-
-    @Command(name = "getcompactionthroughput", description = "Print the MB/s throughput cap for compaction in the system")
-    public static class GetCompactionThroughput extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            System.out.println("Current compaction throughput: " + probe.getCompactionThroughput() + " MB/s");
-        }
-    }
-
-    @Command(name = "getstreamthroughput", description = "Print the Mb/s throughput cap for streaming in the system")
-    public static class GetStreamThroughput extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            System.out.println("Current stream throughput: " + probe.getStreamThroughput() + " Mb/s");
-        }
-    }
-
-    @Command(name = "getendpoints", description = "Print the end points that owns the key")
-    public static class GetEndpoints extends NodeToolCmd
-    {
-        @Arguments(usage = "<keyspace> <table> <key>", description = "The keyspace, the table, and the key for which we need to find the endpoint")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() == 3, "getendpoints requires ks, cf and key args");
-            String ks = args.get(0);
-            String cf = args.get(1);
-            String key = args.get(2);
-
-            List<InetAddress> endpoints = probe.getEndpoints(ks, cf, key);
-            for (InetAddress endpoint : endpoints)
-            {
-                System.out.println(endpoint.getHostAddress());
-            }
-        }
-    }
-
-    @Command(name = "getsstables", description = "Print the sstable filenames that own the key")
-    public static class GetSSTables extends NodeToolCmd
-    {
-        @Arguments(usage = "<keyspace> <table> <key>", description = "The keyspace, the table, and the key")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() == 3, "getsstables requires ks, cf and key args");
-            String ks = args.get(0);
-            String cf = args.get(1);
-            String key = args.get(2);
-
-            List<String> sstables = probe.getSSTables(ks, cf, key);
-            for (String sstable : sstables)
-            {
-                System.out.println(sstable);
-            }
-        }
-    }
-
-    @Command(name = "gossipinfo", description = "Shows the gossip information for the cluster")
-    public static class GossipInfo extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            System.out.println(probe.getGossipInfo());
-        }
-    }
-
-    @Command(name = "invalidatekeycache", description = "Invalidate the key cache")
-    public static class InvalidateKeyCache extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.invalidateKeyCache();
-        }
-    }
-
-    @Command(name = "invalidaterowcache", description = "Invalidate the row cache")
-    public static class InvalidateRowCache extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.invalidateRowCache();
-        }
-    }
-
-    @Command(name = "invalidatecountercache", description = "Invalidate the counter cache")
-    public static class InvalidateCounterCache extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.invalidateCounterCache();
-        }
-    }
-
-    @Command(name = "join", description = "Join the ring")
-    public static class Join extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkState(!probe.isJoined(), "This node has already joined the ring.");
-
-            try
-            {
-                probe.joinRing();
-            } catch (IOException e)
-            {
-                throw new RuntimeException("Error during joining the ring", e);
-            }
-        }
-    }
-
-    @Command(name = "move", description = "Move node on the token ring to a new token")
-    public static class Move extends NodeToolCmd
-    {
-        @Arguments(usage = "<new token>", description = "The new token.", required = true)
-        private String newToken = EMPTY;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            try
-            {
-                probe.move(newToken);
-            } catch (IOException e)
-            {
-                throw new RuntimeException("Error during moving node", e);
-            }
-        }
-    }
-
-
-
-    @Command(name = "pausehandoff", description = "Pause hints delivery process")
-    public static class PauseHandoff extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.pauseHintsDelivery();
-        }
-    }
-
-    @Command(name = "resumehandoff", description = "Resume hints delivery process")
-    public static class ResumeHandoff extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.resumeHintsDelivery();
-        }
-    }
-
-
-    @Command(name = "proxyhistograms", description = "Print statistic histograms for network operations")
-    public static class ProxyHistograms extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            String[] percentiles = new String[]{"50%", "75%", "95%", "98%", "99%", "Min", "Max"};
-            double[] readLatency = probe.metricPercentilesAsArray(probe.getProxyMetric("Read"));
-            double[] writeLatency = probe.metricPercentilesAsArray(probe.getProxyMetric("Write"));
-            double[] rangeLatency = probe.metricPercentilesAsArray(probe.getProxyMetric("RangeSlice"));
-
-            System.out.println("proxy histograms");
-            System.out.println(format("%-10s%18s%18s%18s",
-                    "Percentile", "Read Latency", "Write Latency", "Range Latency"));
-            System.out.println(format("%-10s%18s%18s%18s",
-                    "", "(micros)", "(micros)", "(micros)"));
-            for (int i = 0; i < percentiles.length; i++)
-            {
-                System.out.println(format("%-10s%18.2f%18.2f%18.2f",
-                        percentiles[i],
-                        readLatency[i],
-                        writeLatency[i],
-                        rangeLatency[i]));
-            }
-            System.out.println();
-        }
-    }
-
-    @Command(name = "rebuild", description = "Rebuild data by streaming from other nodes (similarly to bootstrap)")
-    public static class Rebuild extends NodeToolCmd
-    {
-        @Arguments(usage = "<src-dc-name>", description = "Name of DC from which to select sources for streaming. By default, pick any DC")
-        private String sourceDataCenterName = null;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.rebuild(sourceDataCenterName);
-        }
-    }
-
-    @Command(name = "refresh", description = "Load newly placed SSTables to the system without restart")
-    public static class Refresh extends NodeToolCmd
-    {
-        @Arguments(usage = "<keyspace> <table>", description = "The keyspace and table name")
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() == 2, "refresh requires ks and cf args");
-            probe.loadNewSSTables(args.get(0), args.get(1));
-        }
-    }
-
-    @Command(name = "removenode", description = "Show status of current node removal, force completion of pending removal or remove provided ID")
-    public static class RemoveNode extends NodeToolCmd
-    {
-        @Arguments(title = "remove_operation", usage = "<status>|<force>|<ID>", description = "Show status of current node removal, force completion of pending removal, or remove provided ID", required = true)
-        private String removeOperation = EMPTY;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            switch (removeOperation)
-            {
-                case "status":
-                    System.out.println("RemovalStatus: " + probe.getRemovalStatus());
-                    break;
-                case "force":
-                    System.out.println("RemovalStatus: " + probe.getRemovalStatus());
-                    probe.forceRemoveCompletion();
-                    break;
-                default:
-                    probe.removeNode(removeOperation);
-                    break;
-            }
-        }
-    }
-
-    @Command(name = "assassinate", description = "Forcefully remove a dead node without re-replicating any data.  Use as a last resort if you cannot removenode")
-    public static class Assassinate extends NodeToolCmd
-    {
-        @Arguments(title = "ip address", usage = "<ip_address>", description = "IP address of the endpoint to assassinate", required = true)
-        private String endpoint = EMPTY;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            try
-            {
-                probe.assassinateEndpoint(endpoint);
-            }
-            catch (UnknownHostException e)
-            {
-                throw new RuntimeException(e);
-            }
-        }
-    }
-
-    @Command(name = "repair", description = "Repair one or more tables")
-    public static class Repair extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspace> <tables>...]", description = "The keyspace followed by one or many tables")
-        private List<String> args = new ArrayList<>();
-
-        @Option(title = "seqential", name = {"-seq", "--sequential"}, description = "Use -seq to carry out a sequential repair")
-        private boolean sequential = false;
-
-        @Option(title = "dc parallel", name = {"-dcpar", "--dc-parallel"}, description = "Use -dcpar to repair data centers in parallel.")
-        private boolean dcParallel = false;
-
-        @Option(title = "local_dc", name = {"-local", "--in-local-dc"}, description = "Use -local to only repair against nodes in the same datacenter")
-        private boolean localDC = false;
-
-        @Option(title = "specific_dc", name = {"-dc", "--in-dc"}, description = "Use -dc to repair specific datacenters")
-        private List<String> specificDataCenters = new ArrayList<>();
-
-        @Option(title = "specific_host", name = {"-hosts", "--in-hosts"}, description = "Use -hosts to repair specific hosts")
-        private List<String> specificHosts = new ArrayList<>();
-
-        @Option(title = "start_token", name = {"-st", "--start-token"}, description = "Use -st to specify a token at which the repair range starts")
-        private String startToken = EMPTY;
-
-        @Option(title = "end_token", name = {"-et", "--end-token"}, description = "Use -et to specify a token at which repair range ends")
-        private String endToken = EMPTY;
-
-        @Option(title = "primary_range", name = {"-pr", "--partitioner-range"}, description = "Use -pr to repair only the first range returned by the partitioner")
-        private boolean primaryRange = false;
-
-        @Option(title = "full", name = {"-full", "--full"}, description = "Use -full to issue a full repair.")
-        private boolean fullRepair = false;
-
-        @Option(title = "job_threads", name = {"-j", "--job-threads"}, description = "Number of threads to run repair jobs. " +
-                                                                                     "Usually this means number of CFs to repair concurrently. " +
-                                                                                     "WARNING: increasing this puts more load on repairing nodes, so be careful. (default: 1, max: 4)")
-        private int numJobThreads = 1;
-
-        @Option(title = "trace_repair", name = {"-tr", "--trace"}, description = "Use -tr to trace the repair. Traces are logged to system_traces.events.")
-        private boolean trace = false;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            List<String> keyspaces = parseOptionalKeyspace(args, probe);
-            String[] cfnames = parseOptionalColumnFamilies(args);
-
-            if (primaryRange && (!specificDataCenters.isEmpty() || !specificHosts.isEmpty()))
-                throw new RuntimeException("Primary range repair should be performed on all nodes in the cluster.");
-
-            for (String keyspace : keyspaces)
-            {
-                Map<String, String> options = new HashMap<>();
-                RepairParallelism parallelismDegree = RepairParallelism.PARALLEL;
-                if (sequential)
-                    parallelismDegree = RepairParallelism.SEQUENTIAL;
-                else if (dcParallel)
-                    parallelismDegree = RepairParallelism.DATACENTER_AWARE;
-                options.put(RepairOption.PARALLELISM_KEY, parallelismDegree.getName());
-                options.put(RepairOption.PRIMARY_RANGE_KEY, Boolean.toString(primaryRange));
-                options.put(RepairOption.INCREMENTAL_KEY, Boolean.toString(!fullRepair));
-                options.put(RepairOption.JOB_THREADS_KEY, Integer.toString(numJobThreads));
-                options.put(RepairOption.TRACE_KEY, Boolean.toString(trace));
-                options.put(RepairOption.COLUMNFAMILIES_KEY, StringUtils.join(cfnames, ","));
-                if (!startToken.isEmpty() || !endToken.isEmpty())
-                {
-                    options.put(RepairOption.RANGES_KEY, startToken + ":" + endToken);
-                }
-                if (localDC)
-                {
-                    options.put(RepairOption.DATACENTERS_KEY, StringUtils.join(newArrayList(probe.getDataCenter()), ","));
-                }
-                else
-                {
-                    options.put(RepairOption.DATACENTERS_KEY, StringUtils.join(specificDataCenters, ","));
-                }
-                options.put(RepairOption.HOSTS_KEY, StringUtils.join(specificHosts, ","));
-                try
-                {
-                    probe.repairAsync(System.out, keyspace, options);
-                } catch (Exception e)
-                {
-                    throw new RuntimeException("Error occurred during repair", e);
-                }
-            }
-        }
-    }
-
-    @Command(name = "setcachecapacity", description = "Set global key, row, and counter cache capacities (in MB units)")
-    public static class SetCacheCapacity extends NodeToolCmd
-    {
-        @Arguments(title = "<key-cache-capacity> <row-cache-capacity> <counter-cache-capacity>",
-                   usage = "<key-cache-capacity> <row-cache-capacity> <counter-cache-capacity>",
-                   description = "Key cache, row cache, and counter cache (in MB)",
-                   required = true)
-        private List<Integer> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() == 3, "setcachecapacity requires key-cache-capacity, row-cache-capacity, and counter-cache-capacity args.");
-            probe.setCacheCapacities(args.get(0), args.get(1), args.get(2));
-        }
-    }
-
-    @Command(name = "setcompactionthreshold", description = "Set min and max compaction thresholds for a given table")
-    public static class SetCompactionThreshold extends NodeToolCmd
-    {
-        @Arguments(title = "<keyspace> <table> <minthreshold> <maxthreshold>", usage = "<keyspace> <table> <minthreshold> <maxthreshold>", description = "The keyspace, the table, min and max threshold", required = true)
-        private List<String> args = new ArrayList<>();
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(args.size() == 4, "setcompactionthreshold requires ks, cf, min, and max threshold args.");
-
-            int minthreshold = parseInt(args.get(2));
-            int maxthreshold = parseInt(args.get(3));
-            checkArgument(minthreshold >= 0 && maxthreshold >= 0, "Thresholds must be positive integers");
-            checkArgument(minthreshold <= maxthreshold, "Min threshold cannot be greater than max.");
-            checkArgument(minthreshold >= 2 || maxthreshold == 0, "Min threshold must be at least 2");
-
-            probe.setCompactionThreshold(args.get(0), args.get(1), minthreshold, maxthreshold);
-        }
-    }
-
-    @Command(name = "setcompactionthroughput", description = "Set the MB/s throughput cap for compaction in the system, or 0 to disable throttling")
-    public static class SetCompactionThroughput extends NodeToolCmd
-    {
-        @Arguments(title = "compaction_throughput", usage = "<value_in_mb>", description = "Value in MB, 0 to disable throttling", required = true)
-        private Integer compactionThroughput = null;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.setCompactionThroughput(compactionThroughput);
-        }
-    }
-
-    @Command(name = "sethintedhandoffthrottlekb", description =  "Set hinted handoff throttle in kb per second, per delivery thread.")
-    public static class SetHintedHandoffThrottleInKB extends NodeToolCmd
-    {
-        @Arguments(title = "throttle_in_kb", usage = "<value_in_kb_per_sec>", description = "Value in KB per second", required = true)
-        private Integer throttleInKB = null;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.setHintedHandoffThrottleInKB(throttleInKB);
-        }
-    }
-
-    @Command(name = "setstreamthroughput", description = "Set the Mb/s throughput cap for streaming in the system, or 0 to disable throttling")
-    public static class SetStreamThroughput extends NodeToolCmd
-    {
-        @Arguments(title = "stream_throughput", usage = "<value_in_mb>", description = "Value in Mb, 0 to disable throttling", required = true)
-        private Integer streamThroughput = null;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            probe.setStreamThroughput(streamThroughput);
-        }
-    }
-
-    @Command(name = "settraceprobability", description = "Sets the probability for tracing any given request to value. 0 disables, 1 enables for all requests, 0 is the default")
-    public static class SetTraceProbability extends NodeToolCmd
-    {
-        @Arguments(title = "trace_probability", usage = "<value>", description = "Trace probability between 0 and 1 (ex: 0.2)", required = true)
-        private Double traceProbability = null;
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            checkArgument(traceProbability >= 0 && traceProbability <= 1, "Trace probability must be between 0 and 1");
-            probe.setTraceProbability(traceProbability);
-        }
-    }
-
-    @Command(name = "snapshot", description = "Take a snapshot of specified keyspaces or a snapshot of the specified table")
-    public static class Snapshot extends NodeToolCmd
-    {
-        @Arguments(usage = "[<keyspaces...>]", description = "List of keyspaces. By default, all keyspaces")
-        private List<String> keyspaces = new ArrayList<>();
-
-        @Option(title = "table", name = {"-cf", "--column-family", "--table"}, description = "The table name (you must specify one and only one keyspace for using this option)")
-        private String columnFamily = null;
-
-        @Option(title = "tag", name = {"-t", "--tag"}, description = "The name of the snapshot")
-        private String snapshotName = Long.toString(System.currentTimeMillis());
-
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            try
-            {
-                StringBuilder sb = new StringBuilder();
-
-                sb.append("Requested creating snapshot(s) for ");
-
-                if (keyspaces.isEmpty())
-                    sb.append("[all keyspaces]");
-                else
-                    sb.append("[").append(join(keyspaces, ", ")).append("]");
-
-                if (!snapshotName.isEmpty())
-                    sb.append(" with snapshot name [").append(snapshotName).append("]");
-
-                System.out.println(sb.toString());
-
-                probe.takeSnapshot(snapshotName, columnFamily, toArray(keyspaces, String.class));
-                System.out.println("Snapshot directory: " + snapshotName);
-            } catch (IOException e)
-            {
-                throw new RuntimeException("Error during taking a snapshot", e);
-            }
-        }
-    }
-
-    @Command(name = "listsnapshots", description = "Lists all the snapshots along with the size on disk and true size.")
-    public static class ListSnapshots extends NodeToolCmd
-    {
-        @Override
-        public void execute(NodeProbe probe)
-        {
-            try
-            {
-                System.out.println("Snapshot Details: ");
-
-                final Map<String,TabularData> snapshotDetails = probe.getSnapshotDetails();
-                if (snapshotDetails.isEmpty())
-                {
-                    System.out.printf("There are no snapshots");
-                    return;
-                }
-
-                final long trueSnapshotsSize = probe.trueSnapshotsSize();
-                final String format = "%-20s%-29s%-29s%-19s%-19s%n";
-                // display column names only once
-                final List<String> indexNames = snapshotDetails.entrySet().iterator().next().getValue().getTabularType().getIndexNames();
-                System.out.printf(format, (Object[]) indexNames.toArray(new String[indexNames.size()]));
-
-                for (final Map.Entry<String, TabularData> snapshotDetail : snapshotDetails.entrySet())
-                {
-                    Set<?> values = snapshotDetail.getValue().keySet();
-                    for (Object eachValue : values)
-                    {
-                        final

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