java.lang.Object
- org.apache.ignite.internal.processors.query.running.HeavyQueriesTracker

```
public final class HeavyQueriesTracker
extends Object
```
Class to track heavy queries (long-running or producing a big result-set).

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class HeavyQueriesTracker.ResultSetChecker
Holds result-set limit settings for the specified query.

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`BIG_RESULT_SET_MSG`
`static String`	`LONG_QUERY_ERROR_MSG`
`static String`	`LONG_QUERY_EXEC_MSG`	Message about the long execution of the query.
`static String`	`LONG_QUERY_FINISHED_MSG`

Constructor Summary

Constructors
Constructor Description

HeavyQueriesTracker(GridKernalContext ctx)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Set<TrackableQuery>`	`getQueries()`
`long`	`getResultSetSizeThreshold()`
`int`	`getResultSetSizeThresholdMultiplier()`	Gets result set size threshold multiplier.
`long`	`getTimeout()`
`int`	`getTimeoutMultiplier()`
`HeavyQueriesTracker.ResultSetChecker`	`resultSetChecker(TrackableQuery qryInfo)`	Creates new result-set checker.
`void`	`setResultSetSizeThreshold(long rsSizeThreshold)`	Sets threshold result's row count, when count of fetched rows is bigger than the threshold warning will be printed.
`void`	`setResultSetSizeThresholdMultiplier(int rsSizeThresholdMult)`	Sets result set size threshold multiplier.
`void`	`setTimeout(long timeout)`	Sets timeout in milliseconds after which long query warning will be printed.
`void`	`setTimeoutMultiplier(int timeoutMult)`	Sets long query timeout multiplier.
`void`	`startTracking(TrackableQuery qryInfo)`
`void`	`stop()`
`void`	`stopTracking(TrackableQuery qryInfo, @Nullable Throwable err)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - LONG_QUERY_EXEC_MSG
```
public static final String LONG_QUERY_EXEC_MSG
```
    Message about the long execution of the query.
    
    See Also:
    
    Constant Field Values
  - LONG_QUERY_FINISHED_MSG
```
public static final String LONG_QUERY_FINISHED_MSG
```
    See Also:
    
    Constant Field Values
  - LONG_QUERY_ERROR_MSG
```
public static final String LONG_QUERY_ERROR_MSG
```
    See Also:
    
    Constant Field Values
  - BIG_RESULT_SET_MSG
```
public static final String BIG_RESULT_SET_MSG
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - HeavyQueriesTracker
```
public HeavyQueriesTracker(GridKernalContext ctx)
```
    Parameters:
    
    ctx - Kernal context.
- Method Detail
  - stop
```
public void stop()
```
  - startTracking
```
public void startTracking(TrackableQuery qryInfo)
```
    Parameters:
    
    qryInfo - Query info to register.
  - stopTracking
```
public void stopTracking(TrackableQuery qryInfo,
                         @Nullable
                         @Nullable Throwable err)
```
    Parameters:
    
    qryInfo - Query info to remove.
    
    err - Exception if query executed with error.
  - resultSetChecker
```
public HeavyQueriesTracker.ResultSetChecker resultSetChecker(TrackableQuery qryInfo)
```
    Creates new result-set checker.
    
    Parameters:
    
    qryInfo - Query info.
  - getTimeout
```
public long getTimeout()
```
    Returns:
    
    Timeout in milliseconds after which long query warning will be printed.
  - setTimeout
```
public void setTimeout(long timeout)
```
    Sets timeout in milliseconds after which long query warning will be printed.
    
    Parameters:
    
    timeout - Timeout in milliseconds after which long query warning will be printed.
  - getTimeoutMultiplier
```
public int getTimeoutMultiplier()
```
    Returns:
    
    Long query timeout multiplier.
  - setTimeoutMultiplier
```
public void setTimeoutMultiplier(int timeoutMult)
```
    Sets long query timeout multiplier. The warning will be printed after: - timeout; - timeout * multiplier; - timeout * multiplier * multiplier; - etc... If the multiplier <= 1, the warning message is printed once.
    
    Parameters:
    
    timeoutMult - Long query timeout multiplier.
  - getResultSetSizeThreshold
```
public long getResultSetSizeThreshold()
```
    Returns:
    
    Threshold result's row count, when count of fetched rows is bigger than the threshold warning will be printed.
  - setResultSetSizeThreshold
```
public void setResultSetSizeThreshold(long rsSizeThreshold)
```
    Sets threshold result's row count, when count of fetched rows is bigger than the threshold warning will be printed.
    
    Parameters:
    
    rsSizeThreshold - Threshold result's row count, when count of fetched rows is bigger than the threshold warning will be printed.
  - getResultSetSizeThresholdMultiplier
```
public int getResultSetSizeThresholdMultiplier()
```
    Gets result set size threshold multiplier. The warning will be printed after: - size of result set > threshold; - size of result set > threshold * multiplier; - size of result set > threshold * multiplier * multiplier; - etc. If the multiplier <= 1, the warning message is printed once.
    
    Returns:
    
    Result set size threshold multiplier.
  - setResultSetSizeThresholdMultiplier
```
public void setResultSetSizeThresholdMultiplier(int rsSizeThresholdMult)
```
    Sets result set size threshold multiplier.
    
    Parameters:
    
    rsSizeThresholdMult - Result set size threshold multiplier
  - getQueries
```
public Set<TrackableQuery> getQueries()
```

Class HeavyQueriesTracker

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

LONG_QUERY_EXEC_MSG

LONG_QUERY_FINISHED_MSG

LONG_QUERY_ERROR_MSG

BIG_RESULT_SET_MSG

Constructor Detail

HeavyQueriesTracker

Method Detail

stop

startTracking

stopTracking

resultSetChecker

getTimeout

setTimeout

getTimeoutMultiplier

setTimeoutMultiplier

getResultSetSizeThreshold

setResultSetSizeThreshold

getResultSetSizeThresholdMultiplier

setResultSetSizeThresholdMultiplier

getQueries