core/org.gnit.lucenekmp.index/NoMergeScheduler

NoMergeScheduler

A MergeScheduler which never executes any merges. It is also a singleton and can be accessed through NoMergeScheduler.INSTANCE. Use it if you want to prevent an IndexWriter from ever executing merges, regardless of the MergePolicy used. Note that you can achieve the same thing by using NoMergePolicy, however with NoMergeScheduler you also ensure that no unnecessary code of any MergeScheduler implementation is ever executed. Hence it is recommended to use both if you want to disable merges from ever happening.

Types

Companion

object Companion

Functions

clone

fun clone(): MergeScheduler

open override fun close()

Close this MergeScheduler.

getIntraMergeExecutor

open override fun getIntraMergeExecutor(merge: MergePolicy.OneMerge): Executor

Provides an executor for parallelism during a single merge operation. By default, the method returns a SameThreadExecutorService where all intra-merge actions occur in their calling thread.

initialize

open fun initialize(infoStream: InfoStream, directory: Directory)

IndexWriter calls this on init.

merge

open suspend override fun merge(mergeSource: MergeScheduler.MergeSource, trigger: MergeTrigger)

Run the merges provided by MergeSource.getNextMerge.

message

fun message(message: String)

Outputs the given message - this method assumes .verbose was called and returned true.

verbose

fun verbose(): Boolean

Returns true if infoStream messages are enabled. This method is usually used in conjunction with .message:

wrapForMerge

open override fun wrapForMerge(merge: MergePolicy.OneMerge, in: Directory): Directory

Wraps the incoming Directory so that we can merge-throttle it using [ ].