core/org.gnit.lucenekmp.index/FlushPolicy

FlushPolicy

FlushPolicy controls when segments are flushed from a RAM resident internal data-structure to the IndexWriters Directory.

Segments are traditionally flushed by:

RAM consumption - configured via IndexWriterConfig.setRAMBufferSizeMB
Number of RAM resident documents - configured via

IndexWriter consults the provided FlushPolicy to control the flushing process. The policy is informed for each added or updated document as well as for each delete term. Based on the FlushPolicy, the information provided via DocumentsWriterPerThread and DocumentsWriterFlushControl, the FlushPolicy decides if a [ ] needs flushing and mark it as flush-pending via , or if deletes need to be applied.

Constructors

FlushPolicy

constructor()

Functions

init

fun init(indexWriterConfig: LiveIndexWriterConfig)

Called by DocumentsWriter to initialize the FlushPolicy

onChange

abstract fun onChange(control: DocumentsWriterFlushControl, perThread: DocumentsWriterPerThread?)

Called for each delete, insert or update. For pure deletes, the given [ ] may be null.

FlushPolicy

See also

Constructors

Functions