Package com.hazelcast.spi.hotrestart

SPI for the Hot Restart store.

See: Description

Interface Summary

Interface	Description
HotRestartKey	Identifies a record in the Hot Restart store.
HotRestartStore	Persistent store of key-value mappings specifically tailored to support the Hot Restart feature.
KeyHandle	A "lightweight" key which uniquely identifies a record in the Hot Restart store's metadata structures using the minimal amount of data.
KeyHandleOffHeap	KeyHandle for an off-heap record.
RamStore	Specifies operations that the Hot Restart store will request from the RAM store.
RamStoreRegistry	RAM store registry for the data managed by a Hot Restart store.
RecordDataSink	A mutable sink for the data of a single record in the Hot Restart Store.

Exception Summary

Exception	Description
HotRestartException	Exception type exposed to the client of the Hot Restart SPI.

Package com.hazelcast.spi.hotrestart Description

SPI for the Hot Restart store.

A Hot Restart store is used internally by Hazelcast to provide the Hot Restart feature: the ability to restart after a crash or shutdown with its data structures restored to the state before going down.

The Hot Restart Store exposes the following probes:

• hot-restart.<store_name>.valOccupancy: approximate amount of data stored in main chunk files (does not account for data in the active chunk);
• hot-restart.<store_name>.valGarbage: approximate amount of garbage within that data (does not account for garbage in the active chunk);
• hot-restart.<store_name>.tombOccupancy: approximate amount of data stored in tombstone chunk files (does not account for data in the active tombstone chunk);
• hot-restart.<store_name>.tombGarbage: approximate amount of garbage within that data (does not account for garbage in the active tombstone chunk);
• hot-restart.<store_name>.liveValues: the number of live value records in the store;
• hot-restart.<store_name>.liveTombstones: the number of live tombstone records in the store.