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Receive: writes for existing tenants block for the entire WAL replay since v0.41.0 (#8562) instead of failing fast

Status: Open.

#9004 In thanos-io/thanos;

· mattshep opened on Sep 1, 2026

Compactor not respecting --block-files-concurrency= for upload after a downsample

Status: Open.

#9001 In thanos-io/thanos;

· bigon opened on Aug 31, 2026

tools bucket web: ConcurrentLister still panics with "send on closed channel" after object-store cancellation in v0.42.4

Status: Open.

#8996 In thanos-io/thanos;

· Amet13 opened on Aug 28, 2026

ui: 'Use Partial Response' checkbox can't stay off (forced back on after reload, then stuck)

Status: Open.

#8993 In thanos-io/thanos;

· donaldraph opened on Aug 27, 2026

ui: Alerts page uses excessive CPU and memory with a lot of rule groups

Status: Open.

#8991 In thanos-io/thanos;

· ibakshay opened on Aug 26, 2026

Support Prometheus XOR2 chunk encoding

Status: Open.

#8984 In thanos-io/thanos;

· roidelapluie opened on Aug 18, 2026

Bug: Empty tenant_matcher_type in shuffle sharding override breaks shard_size determinism

Status: Open.

#8983 In thanos-io/thanos;

· bisshwajitsamanta opened on Aug 18, 2026

Maintain rule state across files in Thanos Rule

Status: Open.

#8977 In thanos-io/thanos;

· joaomqc opened on Aug 12, 2026

Offer minimal/distroless docker images

help wanted

Status: Open.

#8961 In thanos-io/thanos;

· jkroepke opened on Aug 4, 2026

Receive Ingestor unbound disk growth beyond retention window after WAL compaction failure

Status: Open.

#8960 In thanos-io/thanos;

· xvzf opened on Aug 3, 2026

Cache instrumentation (internal/cortex/chunk/cache) emits span events with empty name via OTel bridge, causing OTLP export rejection by strict backends

Status: Open.

#8938 In thanos-io/thanos;

· milan-holub opened on Jul 21, 2026

compactv2: RelabelModifier ignores series set error and can write partial blocks

Status: Open.

#8933 In thanos-io/thanos;

· aeron-gh opened on Jul 19, 2026