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Apache Druid: a high performance real-time analytics database.

Results 660 druid issues
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### Motivation When I used the Druid histogram extension to calculate the quantile value, I found that the performance was too poor compared with the exact quantile value of Clickhouse....

Feature/Change Description

Currently, the `druid-kubernetes-extension` is in experimental status: https://druid.apache.org/docs/latest/development/extensions-core/kubernetes.html: > Consider this an [EXPERIMENTAL](https://druid.apache.org/docs/latest/development/experimental.html) feature mostly because it has not been tested yet on a wide variety of long running Druid...

Area - Extension
Kubernetes

### Description The `FiniteFirehoseFactory` and `InputRowParser` classes were deprecated in 0.17.0 (https://github.com/apache/druid/pull/8823) in favor of `InputSource` & `InputFormat`. This PR removes the `FiniteFirehoseFactory` and all its implementations along with classes...

Release Notes
Design Review
Refactoring
Area - Ingestion

https://github.com/apache/druid/pull/12792 allows kinesis ingestion with empty shards and removes the need for a sequence number fetch timeout. This PR fixes the docs to not mention related limitations. It also improves...

Area - Documentation
Area - Streaming Ingestion

## Description [Issue #12359](https://github.com/apache/druid/issues/12359) proposes an approach to simplify and streamline integration tests, especially around the developer experience, but also for Travis. See that issue for the background. This PR...

Area - Testing
Area - Dev

Two changes: 1) Restore the text of the SQL query. It was removed in #12897, but then it was later pointed out that the text is helpful for end users...

Area - SQL

### Description 1. In our production system, a case like this: For `SeekableStreamSupervisor#checkTaskDuration()`, if the following code timeout happens, then pausing tasks in taskClient were still running. `List results =...

Bug
Area - Streaming Ingestion

This change adds the query/time metric for SQL queries from router. Currently, the native queries do report that metric whereas the SQL queries don't. The biggest problem in support SQL...

Area - Metrics/Event Emitting
Area - SQL

### Affected Version 0.22.1 ### Description We have 2 coordinators acting as overlord. With no apparent cause, neither overlords were being elected as leader. We performed a rolling restart of...

Uncategorized problem report

### Description This property appears to have been omitted from the docs. I don't see why we would want to avoid exposing it. If operators are going to use `http`...

Area - Documentation