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Vladimir Davydov authored
During recovery, we may write VY_LOG_CREATE_LSM and VY_LOG_DROP_LSM
records we failed to write before restart (because those records are
written after WAL and hence may not make it to vylog). Right after
recovery we invoke garbage collection to drop incomplete runs. Once
VY_LOG_PREPARE_LSM record is introduced, we will also collect incomplete
LSM trees there (those we failed to build). However, there may be LSM
trees we managed to build but failed to write VY_LOG_CREATE_LSM for.
This is OK as we will retry vylog write, but currenntly it isn't
reflected in the recovery context used for garbage collection. To avoid
purging such LSM trees, let's update the recovery context with records
written during recovery.

Needed for #1653
d135f39c
History

Tarantool

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http://tarantool.org

Tarantool is an in-memory database and application server.

Key features of the application server:

  • 100% compatible drop-in replacement for Lua 5.1, based on LuaJIT 2.1. Simply use #!/usr/bin/tarantool instead of #!/usr/bin/lua in your script.
  • full support for Lua modules and a rich set of own modules, including cooperative multitasking, non-blocking I/O, access to external databases, etc

Key features of the database:

  • MsgPack data format and MsgPack based client-server protocol
  • two data engines: 100% in-memory with optional persistence and a 2-level disk-based B-tree, to use with large data sets
  • multiple index types: HASH, TREE, RTREE, BITSET
  • asynchronous master-master replication
  • authentication and access control
  • the database is just a C extension to the app server and can be turned off

Supported platforms are Linux/x86 and FreeBSD/x86, Mac OS X.

Tarantool is ideal for data-enriched components of scalable Web architecture: queue servers, caches, stateful Web applications.

To download and install Tarantool as a binary package for your OS, please visit https://tarantool.org/download.html.

To build Tarantool from source, see detailed instructions in the Tarantool documentation at https://tarantool.org/doc/dev_guide/building_from_source.html.

Please report bugs at http://github.com/tarantool/tarantool/issues We also warmly welcome your feedback in the discussion mailing list, tarantool@googlegroups.com.

Thank you for your interest in Tarantool!