Package org.apache.lucene.benchmark.byTask.tasks

# Class NearRealtimeReaderTask

java.lang.Object
org.apache.lucene.benchmark.byTask.tasks.PerfTask
org.apache.lucene.benchmark.byTask.tasks.NearRealtimeReaderTask

All Implemented Interfaces:
  `Cloneable`

public class NearRealtimeReaderTask extends PerfTask
Spawns a BG thread that periodically (defaults to 3.0 seconds, but accepts param in seconds) wakes up and asks IndexWriter for a near real-time reader. Then runs a single query (body: 1) sorted by docdate, and prints time to reopen and time to run the search.

WARNING: This API is experimental and might change in incompatible ways in the next release.
  It's also not generally usable, eg you cannot change which query is executed.

## Field Summary

### Fields inherited from class org.apache.lucene.benchmark.byTask.tasks.PerfTask

`logStep, NEW_LINE, params, stopNow`

## Constructor Summary

Constructors
Constructor
Description
`NearRealtimeReaderTask(PerfRunData runData)`

## Method Summary

Modifier and Type
Method
Description
`void`
`close()`
`int`
`doLogic()`
Perform the task once (ignoring repetitions specification) Return number of work items done by this task.
`void`
`setParams(String params)`
Set the params of this task.
`boolean`
`supportsParams()`
Sub classes that support parameters must override this method to return true.

### Methods inherited from class org.apache.lucene.benchmark.byTask.tasks.PerfTask

`clone, getAlgLineNum, getBackgroundDeltaPriority, getDepth, getLogMessage, getName, getParams, getRunData, getRunInBackground, isDisableCounting, runAndMaybeStats, setAlgLineNum, setDepth, setDisableCounting, setName, setRunInBackground, setup, shouldNeverLogAtStart, shouldNotRecordStats, stopNow, tearDown, toString`

### Methods inherited from class java.lang.Object

`equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

## Constructor Details

### NearRealtimeReaderTask

public NearRealtimeReaderTask(PerfRunData runData)

## Method Details

### doLogic

public int doLogic() throws Exception
Description copied from class: `PerfTask`
Perform the task once (ignoring repetitions specification) Return number of work items done by this task. For indexing that can be number of docs added. For warming that can be number of scanned items, etc.

Specified by:
  `doLogic` in class `PerfTask`
Returns:
  number of work items done by this task.
Throws:
  `Exception`

### setParams

public void setParams(String params)
Description copied from class: `PerfTask`
Set the params of this task.

Overrides:
  `setParams` in class `PerfTask`

### close

public void close()

Overrides:
  `close` in class `PerfTask`

### supportsParams

public boolean supportsParams()
Description copied from class: `PerfTask`
Sub classes that support parameters must override this method to return true.

Overrides:
  `supportsParams` in class `PerfTask`
Returns:
  true iff this task supports command line params.