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An extensible distributed system for reliable nearline data streaming at scale

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Use helix version 1.0.2. Extend common/zk/ZkClient.java from helix zookeeper client and refactoring some code. Important: DO NOT REPORT SECURITY ISSUES DIRECTLY ON GITHUB. For reporting security issues and contributing security...

Add a test to catch minPartitions and maxPartitions per task issue

Git pre-commit validation script references `#!/usr/bin/env python`, which is likely missing on current systems.

bug

### Subject of the issue On high load brooklin clusters once enabled flushless i get tons of these errors, producers get killed but there are some partitions that keeps growing...

bug

The changes in this PR address the issue of kafka client being stuck on `send` and `flush` in cases when the destination topic gets dropped. Since kafka treats missing topic...

The `status` in `ServerComponentHealth` object can be a very large string containing diagnostics information (per topic-partition offsets etc). Furthermore, in some use cases, `ServerComponentHealth` objects retrieved from each host are...

…rsion Important: DO NOT REPORT SECURITY ISSUES DIRECTLY ON GITHUB. For reporting security issues and contributing security fixes, please, email [email protected] instead, as described in the contribution guidelines. Please, take...

Based on [GHSA-jfh8-c2jp-5v3q](https://github.com/advisories/GHSA-jfh8-c2jp-5v3q) _"Log4j versions prior to 2.16.0 are subject to a remote code execution vulnerability via the ldap JNDI parser."_ In addition, according to [CVE-2021-4104](https://nvd.nist.gov/vuln/detail/CVE-2021-4104), Log4j 1.2 is subject...

bug

Since migrating to AdminClient to create destination topic it was observed that sometimes there is a lag in topic metadata to be synced to all brokers. This may result in...

### Producer is closed forcefully loop After restarting a broker / broker failures (anythins that trigger a leader election) seems like some brooklin TransportProviders cant self heal and get stuck...