Apache BookKeeper 4.9.2 releases: low latency storage service
Apache BookKeeper is a scalable, fault tolerant and low latency storage service optimized for append-only workloads.
It is suitable for being used in following scenarios:
- WAL (Write-Ahead-Logging), e.g. HDFS NameNode.
- Message Store, e.g. Apache Pulsar.
- Offset/Cursor Store, e.g. Apache Pulsar.
- Object/Blob Store, e.g. storing state machine snapshots.
Changelog v4.9.2
- Added HTTP handler to expose bookie state apache/bookkeeper#1995
- Fix DbLedgerStorage encountering unexpected entry id apache/bookkeeper#2002
- Close db properly to avoid open RocksDB failure at the second time apache/bookkeeper#2022
- Cancel LAC watch when longpoll LAC times out apache/bookkeeper#2051
- Wait for LAC update even if ledger fenced apache/bookkeeper#2052
- Bugfix for Percentile Calculation in FastCodahale Timer Implementation apache/bookkeeper#2054
- Use pure python implementation of MurmurHash apache/bookkeeper#2069
- Bookieshell lastmark command isn’t functional, always returning 0-0 apache/bookkeeper#2076