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Vladimir Davydov authored
The tuple cache doesn't store older tuple versions so if a reader is
in a read view, it must skip tuples that are newer than the read view,
see `vy_cache_iterator_stmt_is_visible()`. A reader must also ignore
cached intervals if any of the tuples used as a boundary is invisible
from the read view, see `vy_cache_iterator_skip_to_read_view()`.
There's a bug in `vy_cache_iterator_restore()` because of which such
an interval may be returned to the reader: when we step backwards
from the last returned tuple we consider only one of the boundaries.
As a result, if the other boundary is invisible from the read view,
the reader will assume there's nothing in the index between the
boundaries and skip reading older sources (memory, disk). Fix this by
always checking if the other boundary is visible.

Closes #10109

NO_DOC=bug fix
7b72080d
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Tarantool

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Tarantool is an in-memory computing platform consisting of a database and an application server.

It is distributed under BSD 2-Clause terms.

Key features of the application server:

Key features of the database:

  • MessagePack data format and MessagePack based client-server protocol.
  • Two data engines: 100% in-memory with complete WAL-based persistence and an own implementation of LSM-tree, to use with large data sets.
  • Multiple index types: HASH, TREE, RTREE, BITSET.
  • Document oriented JSON path indexes.
  • Asynchronous master-master replication.
  • Synchronous quorum-based replication.
  • RAFT-based automatic leader election for the single-leader configuration.
  • Authentication and access control.
  • ANSI SQL, including views, joins, referential and check constraints.
  • Connectors for many programming languages.
  • The database is a C extension of the application server and can be turned off.

Supported platforms are Linux (x86_64, aarch64), Mac OS X (x86_64, M1), FreeBSD (x86_64).

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 or using Docker, please see the download instructions.

To build Tarantool from source, see detailed instructions in the Tarantool documentation.

To find modules, connectors and tools for Tarantool, check out our Awesome Tarantool list.

Please report bugs to our issue tracker. We also warmly welcome your feedback on the discussions page and questions on Stack Overflow.

We accept contributions via pull requests. Check out our contributing guide.

Thank you for your interest in Tarantool!