```
public class Trace
extends Object
```
Utility class for tracing within Accumulo. Not intended for client use!

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static Span`	`currentTrace()`	Deprecated. since 1.7 -- it is better to save the span you create in a local variable and call its methods, rather than retrieving the current span
`static long`	`currentTraceId()`	Get the trace id of the current span.
`static void`	`data(String k, String v)`	Add data to the current span.
`static boolean`	`isTracing()`	Returns whether tracing is currently on.
`static void`	`off()`	Finish the current trace.
`static void`	`offNoFlush()`	Deprecated. since 1.7, use `off()` instead
`static Span`	`on(String description)`	Start a trace span with a given description.
`static <T> Span`	`on(String description, org.apache.htrace.Sampler<T> sampler)`	Start a trace span with a given description with the given sampler.
`static Span`	`start(String description)`	Start a new span with a given name, if already tracing.
`static Span`	`trace(TInfo info, String description)`	Continue a trace by starting a new span with a given parent and description.
`static Runnable`	`wrap(Runnable runnable)`	Wrap a runnable in a TraceRunnable, if tracing.
`static <T> T`	`wrapAll(T instance)`
`static <T,V> T`	`wrapAll(T instance, org.apache.htrace.Sampler<V> dist)`

public static Span on(String description)

Start a trace span with a given description.

public static <T> Span on(String description,
                          org.apache.htrace.Sampler<T> sampler)

Start a trace span with a given description with the given sampler.

isTracing
```
public static boolean isTracing()
```
Returns whether tracing is currently on.

currentTraceId
```
public static long currentTraceId()
```
Get the trace id of the current span.

start
```
public static Span start(String description)
```
Start a new span with a given name, if already tracing.

public static Span trace(TInfo info,
                         String description)

Continue a trace by starting a new span with a given parent and description.

public static void data(String k,
                        String v)

Add data to the current span.

public static Runnable wrap(Runnable runnable)

Wrap a runnable in a TraceRunnable, if tracing.

public static <T> T wrapAll(T instance)

public static <T,V> T wrapAll(T instance,
                                    org.apache.htrace.Sampler<V> dist)

Class Trace