Bump org.questdb:questdb from 7.3.9 to 8.2.0 in /modules/questdb

[dependabot]

Bumps org.questdb:questdb from 7.3.9 to 8.2.0.

Release notes

Sourced from org.questdb:questdb's releases.

8.2.0

Interoperability is key. The systems that'll succeed in the future are those which play well with others. As such, QuestDB is committed to both open formats and full participation in the many open ecosystems used by our growing community.

To that goal, our latest release brings with it a major re-construction of our underlying PostgreSQL Wire Protocol implementation. With strict, optimized PGWire compliance, QuestDB 8.2.0 connects gracefully to PowerBI, RStudio, Looker, and much more. And of course, a wave of new functions, Enterprise enhancement, performance improvements, fixes, and much more.

For those in the US, we wish you a fine and comforting thanksgiving in the week to come.

Breaking Changes 💥

• Renamed column in wal_tables() function: The column writerLagTxnCount in the wal_tables() function has been renamed to bufferedTxnSize. This change aims to reduce confusion but may require updates to existing scripts or applications using this function.

New Features 🐣

• Enhanced PGWire server: The PostgreSQL server component has been rewritten to strictly comply with the PostgreSQL wire protocol. This ensures better compatibility with PostgreSQL clients and tools, enabling support for applications like Microsoft Power BI and R. Naturally, it's also much, much more performant. How much? Over 1M rows per second and 700,000 queries per second. 🔥 🚀 🎸

• QuestDB Enterprise | Microsoft Entra ID compatibility: QuestDB Enterprise now supports authentication and authorization via Microsoft Entra ID (formerly Azure Active Directory) for integration with Microsoft's identity services.

• QuestDB Enterprise | Improved PingFederate support: Enhanced compatibility with PingFederate, improving single sign-on (SSO) capabilities and integration with enterprise identity management systems.

• Window function count(): Support for the count() window function has been added. You know, for counting.

SELECT time, value, COUNT(*) OVER (ORDER BY time) AS running_total
FROM measurements;

• Hash functions md5, sha1, sha256: Introduced standard hash functions for generating cryptographic hashes of input strings or binary data.

SELECT md5('hello world') AS hash_value;

• Regression function regr_intercept(): Added the regr_intercept(y, x) function to compute the intercept of the linear regression line determined by dependent variable y and independent variable x.

SELECT regr_intercept(sales, time) FROM revenue_data;

Performance Improvements 🚀

• 10× Speedup for small transactions over PGWire: With the improvements to the PostgreSQL Wire Protocol, we're also seeing up to a tenfold increase in performance for small transactions. This is particularly beneficial for applications that issue frequent small inserts or updates. 🔥 🚀 🎸

• Optimized Window functions: Improved the performance of window functions via faster hash tables and optimized execution paths. Analytical workloads will appreciate it.

Improvements 🛠️

• Background job latency control: Introduced configurable latency setting and deep changes to allow background job execution control. The following new configuration options sets the max amount of time between consecutive commits before WAL apply job takes action and begins merge:

cairo.commit.latency=30s
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Commits

• 4a4eff2 [maven-release-plugin] prepare release 8.2.0
• d80c827 perf(sql): introduce fast path for ordered and limited queries over single lo...
• 820917a chore(pgwire): better handling of statements executed at parse time (#5181)
• d8374fe test(core): speed up tests by 30s (#5180)
• 5bd5263 fix(sql): correctly escape double quotes when exporting CSVs (#5178)
• 88d7fb1 feat(sql): add count(*), count(D), count(Ø), count(K) window function. (#5153)
• 7112d4d perf(sql): improve performance of queries with negative limits and existing o...
• 7cf1fae feat(pgwire): server support for pipelining in PGWire protocol (#4975)
• db7b16f feat(sql): Add common hash functions such as md5, sha1 and sha256 (#5156)
• b8eaf74 test(core): move most storage & fuzz tests from griffin to cairo pkg (#5179)
• Additional commits viewable in compare view

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