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questdb

12 indexed repositories · View on GitHub

questdb
QuestDB is a high performance, open-source, time-series database

Java · 17330 stars
c-questdb-client
The official Rust, C and C++ client for QuestDB

Rust · 73 stars
py-questdb-client
The official Python client for QuestDB

Python · 71 stars
go-questdb-client
The official Golang client for QuestDB

Go · 71 stars
nodejs-questdb-client
The official Node.js client for QuestDB

TypeScript · 48 stars
net-questdb-client
The official .NET/C# client for QuestDB

C# · 44 stars
kafka-questdb-connector
QuestDB connector for Kafka.

Java · 38 stars
questdb-kubernetes
Configuration to run QuestDB in your Kubernetes cluster

Mustache · 37 stars
ui
QuestDB Web Console

TypeScript · 29 stars
grafana-questdb-datasource
Questdb datasource plugin for Grafana.

TypeScript · 19 stars
documentation
QuestDB documentation

TypeScript · 13 stars
java-questdb-client
The official Java client for QuestDB

Java · 10 stars

Beginner friendly Everything

Open All

Sample by should error without a timestamp Open

Bug SQL

Difficulty 3/5 1-2 days Newbie friendliness 58/100

questdb/questdb#7626 · 1 comment · Opened Sep 15, 2026
Keep completed queries in query_activity() for a configurable TTL Open

Enhancement SQL

Difficulty 5/5 Over a week Newbie friendliness 35/100

questdb/questdb#7623 · Opened Sep 14, 2026
Expose query id in HTTP API responses so clients can monitor queries via query_activity() Open

Enhancement REST API

Difficulty 5/5 Over a week Newbie friendliness 45/100

questdb/questdb#7622 · Opened Sep 14, 2026
Divide cairo config into subpages Open

questdb/documentation#552 · 1 assignee · Opened Sep 14, 2026
SQL view updates lose SELECT * coverage for later-added columns Open

Bug Security SQL

Difficulty 4/5 3-5 days Newbie friendliness 68/100

questdb/questdb#7621 · Opened Sep 14, 2026
Flaky on JDK 11: BackgroundDrainerMidDrainCapabilityGapTest.testDeliveringBetweenTwoGapWindowsGrantsAFreshSettleBudget Open

bug QWP

Difficulty 4/5 3-5 days Newbie friendliness 42/100

questdb/java-questdb-client#100 · Opened Sep 11, 2026
java-questdb-client fails to build on JDK 26: FDBigInteger no longer accessible in jdk.internal.math Open

bug

questdb/java-questdb-client#96 · 2 comments · 1 assignee · Opened Sep 10, 2026
Materialized view refresh fails on subqueries reading the base table Open

Bug Materialized View SQL

Difficulty 5/5 Over a week Newbie friendliness 35/100

questdb/questdb#7614 · Opened Sep 9, 2026
QWP/UDP compares column names case-sensitively; the server and QWP/WS do not Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 64/100

questdb/c-questdb-client#204 · Opened Sep 8, 2026
Support and optimize wildcard joins (`text LIKE pattern_column`) Open

New feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

questdb/questdb#7606 · Opened Sep 5, 2026
Integrations: add adbcBridge (Apache Arrow ADBC over the PostgreSQL ODBC driver) Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

questdb/documentation#543 · Opened Sep 5, 2026
Windows: working set grows to tens of GB from memory-mapped column files and is only reclaimed lazily — please consider an opt-in working-set trim Open

Difficulty 5/5 Over a week Newbie friendliness 48/100

questdb/questdb#7601 · 2 comments · Opened Sep 4, 2026
Global RSS limiter still suspends WAL tables when a reader query is over the cap Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

questdb/questdb#7592 · Opened Sep 2, 2026
`FACTORY_TAGS[NATIVE_OFFLOAD] = false` hides regressions of #7267 Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

questdb/questdb#7591 · Opened Sep 2, 2026
`PageFrameReduceTask.of()` keeps peak-sized `NATIVE_OFFLOAD` buffers on the process-lifetime reduce ring Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

questdb/questdb#7590 · Opened Sep 2, 2026
Standalone QWP/WebSocket error-handler reentrancy can mutate a live flush buffer and silently lose rows Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

questdb/py-questdb-client#151 · Opened Sep 2, 2026
master fails testCompile: LineHttpSenderTokenProviderServerTest needs a client API the pinned java-questdb-client lacks Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

questdb/questdb#7580 · Opened Aug 31, 2026
pgwire: DEALLOCATE ALL fails with `Cannot invoke "io.questdb.cutlass.pgwire.PGPipelineEntry.close()" because "pe" is null` — even on a fresh connection with nothing prepared Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

questdb/questdb#7567 · 1 comment · Opened Aug 29, 2026
pgwire: a BINARY column in a simple-query (Query message) result is sent with format code 1 (raw bytes); PostgreSQL always sends text there, so libpq/psycopg and psqlodbc truncate the value at its first 0x00 Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

questdb/questdb#7566 · 1 comment · Opened Aug 29, 2026
Prevent unbounded reads of Arrow stream error messages Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

questdb/py-questdb-client#148 · Opened Aug 28, 2026
Use each Arrow stream's own schema when ingesting DataFrame slices Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

questdb/py-questdb-client#149 · Opened Aug 28, 2026
Prevent Arrow batch leaks when stream callbacks fail Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

questdb/py-questdb-client#147 · Opened Aug 28, 2026
live_views().lag_seqtxn measures against the base table's applied txn, not the sequencer head Open

Bug Live View Monitoring

questdb/questdb#7564 · 2 comments · 1 assignee · Opened Aug 27, 2026
Worker pool spends ~64% of CPU asking for work; TableWriter is 1.65% Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

questdb/questdb#7556 · 1 reaction · Opened Aug 24, 2026
wal_transactions() and SHOW CREATE LIVE VIEW use a stale TableToken from the query cache after a same-name DROP+CREATE Open

Bug Live View

questdb/questdb#7542 · 3 comments · 1 assignee · Opened Aug 24, 2026
Decide whether a claimed `fixed_size_binary(16|32)` should reshape rather than diverge between planners Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

questdb/py-questdb-client#145 · Opened Aug 23, 2026
Concurrent first `import pandas` from worker threads segfaults the interpreter Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

questdb/py-questdb-client#144 · Opened Aug 23, 2026
`PooledReader` lease is bricked by one SQL error, and a healthy pooled connection is dropped Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

questdb/py-questdb-client#143 · Opened Aug 23, 2026
Live Views should have their own section on the web console Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 65/100

questdb/ui#602 · Opened Aug 21, 2026
REBASE WAL and SET TYPE WAL silently drop TTL, table format and row-expiry policy Open

Bug storage WAL

Difficulty 4/5 3-5 days Newbie friendliness 55/100

questdb/questdb#7536 · Opened Aug 21, 2026
Dropping a SYMBOL index invalidates a view that uses LATEST ON over a sub-query Open

Bug Materialized View SQL

Difficulty 4/5 3-5 days Newbie friendliness 42/100

questdb/questdb#7528 · Opened Aug 19, 2026
Bounded ROWS frame with Long.MAX_VALUE PRECEDING throws ArithmeticException: / by zero Open

Bug SQL

Difficulty 4/5 3-5 days Newbie friendliness 68/100

questdb/questdb#7522 · Opened Aug 18, 2026
QWP egress returns 128.0.0.0 instead of NULL for IPv4 column tops Open

Bug Core QWP

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

questdb/questdb#7507 · Opened Aug 13, 2026
QWP durable ack: stale per-table watermark survives same-connection drop/recreate Open

Bug Core QWP

Difficulty 5/5 Over a week Newbie friendliness 35/100

questdb/questdb#7496 · Opened Aug 10, 2026
SYMBOL column: dangling symbol keys silently lose values, and WHERE/GROUP BY disagree on the same column (9.4.0) Open

Bug Core WAL

Difficulty 5/5 Over a week Newbie friendliness 35/100

questdb/questdb#7483 · 2 comments · 2 reactions · Opened Aug 7, 2026
Sender has no dateColumn() setter for DATE columns Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 72/100

questdb/java-questdb-client#83 · Opened Aug 7, 2026
QwpSender has no IPv4 or BINARY column setters (decoder-only) Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 70/100

questdb/go-questdb-client#68 · Opened Aug 7, 2026
row() cannot write UUID, IPv4, GEOHASH, LONG256, CHAR, DATE or BINARY columns Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 42/100

questdb/py-questdb-client#138 · Opened Aug 7, 2026
Quoted column alias containing dots is truncated at the last dot Open

Bug SQL

Difficulty 4/5 3-5 days Newbie friendliness 58/100

questdb/questdb#7478 · Opened Aug 7, 2026
ILP/TCP sender: socket waits are unbounded after connection setup (no connect timeout, no write timeout, keepalive left at OS defaults) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

questdb/c-questdb-client#182 · Opened Aug 6, 2026
Materialized views manually execute RANGE FROM xx To xx, and the view state is always Refreshing Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

questdb/questdb#7471 · 1 comment · Opened Aug 6, 2026
1 million of district symbols limit Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

questdb/java-questdb-client#80 · Opened Aug 5, 2026
perf(sql): LIMIT -N over an indexed scan does two full passes instead of scanning backwards Open

Performance SQL

Difficulty 4/5 3-5 days Newbie friendliness 48/100

questdb/questdb#7463 · 1 comment · Opened Aug 4, 2026
QwpSenderFuzzTest#testReorderingNonAscii flaky on Windows: WebSocket upgrade starved by single-worker test pool Open

Flaky Test ILP Windows

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

questdb/questdb#7456 · 1 comment · Opened Aug 3, 2026
JIT returns wrong results for FLOAT/DOUBLE zero comparisons after constant cache saturation Open

Bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

questdb/questdb#7455 · Opened Aug 3, 2026
SAMPLE BY 1d with FILL and TIME ZONE emits a phantom bucket at the DST fall-back boundary Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

questdb/questdb#7439 · Opened Jul 29, 2026
Timer (`REFRESH EVERY`) materialized view can silently stall indefinitely when a refresh parks while holding the view latch Open

Bug Core Materialized View

Difficulty 4/5 3-5 days Newbie friendliness 52/100

questdb/questdb#7416 · Opened Jul 22, 2026
Support numeric scalar subqueries in BETWEEN predicates Open

New feature SQL

Difficulty 4/5 3-5 days Newbie friendliness 45/100

questdb/questdb#7407 · Opened Jul 16, 2026
InternalError thrown from MmapSegmentRecoveryFaultTest.testScanFaultOnMapPastEofIsHandledAnyFilesystem() Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

questdb/java-questdb-client#69 · Opened Jul 15, 2026
QWP row ingest: SymbolGlobalDict::intern burns 42% of e2e CPU re-interning every distinct symbol on every batch Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

questdb/c-questdb-client#167 · Opened Jul 15, 2026

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