Bump org.questdb:questdb from 7.1.3 to 7.2 in /modules/questdb

[dependabot]

Bumps org.questdb:questdb from 7.1.3 to 7.2.

Release notes

Sourced from org.questdb:questdb's releases.

7.2

Overview

In QuestDB 7.2, we address a key issue faced by our users regarding write amplification and performance under heavy loads.

Previously, QuestDB utilized fixed-size time partitions to store data in ascending chronological order. However, this approach resulted in write amplification, particularly towards the end of each time interval. To tackle this problem, we have introduced implicit variable-size time partitions in this release.

Before

After

The new feature intelligently splits partitions at strategic points, ensuring smaller partition sizes and reducing the surface area for copy-on-write operations. This minimizes write amplification and maintains high write performance, even during heavy load scenarios.

To further optimize the system, we have implemented a sophisticated statistical model to balance the split and squash logic. As a result, partitions statistically unlikely to be modified again are asynchronously squashed, reducing the number of files on disk and alleviating stress on the OS metadata catalog.

Write amplification is reduced by orders of magnitude. Users can now experience sustained write performance, even in demanding environments.

Gotchas

This is a breaking change. If you decide to downgrade from this release, partitions, created by 7.2 may not be understood by earlier versions. To proceed with the downgrade you may need to "squash" partitions on each table. To do that, run the following SQL before the downgrade:

ALTER TABLE <tab> SQUASH PARTITIONS

What is new

SQL

• add auxiliary meta functions to support integration with third party library superset by @​marregui in questdb/questdb#3390
• add string comparison operator by @​puzpuzpuz in questdb/questdb#3458
• support squashing partitions using SQL by @​ideoma in questdb/questdb#3328

ILP

• adjust ILP msg buffer size to max measurement size if needed by @​glasstiger in questdb/questdb#3408

UI

• refresh file status when Import page is back in view by @​insmac in questdb/ui#151
• support adding duplicate filenames in Import by @​insmac in questdb/ui#155

What is fixed

... (truncated)

Commits

• da47b26 [maven-release-plugin] prepare release 7.2
• ebbf999 [maven-release-plugin] prepare for next development iteration
• 17ed98d [maven-release-plugin] prepare release 7.1.4
• be643ad chore(ui): web console version bump to 0.2.2 (#3463)
• 601f395 fix(sql): fix disconnect on sql case statement with one condition and no else...
• 4dde39b feat(sql): support squashing partitions using SQL (#3328)
• 72d4762 feat(sql): add string comparison operator (#3458)
• 4edc34d fix(sql): allow bind variables in "string IN" values list (#3448)
• 5a682b0 fix(core): fix wal apply error (#3460)
• f130cd1 fix(ilp): fix ILP errors when column deleted in middle of line processing (#3...
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