v.21.11Improvements

Fix HDFS Assertion Failure and Update libhdfs3 Library

Official CH changelog text
Fix failed assertion in reading from HDFS. Update libhdfs3 library to be able to run in tests in debug. Closes #29251. Closes #27814. #29276 (Kseniia Sumarokova).
Fixed a failed assertion error when reading data from HDFS by updating the libhdfs3 library to improve stability and support running tests in debug mode.

Why it matters

This update resolves critical issues causing read failures from HDFS in ClickHouse, enhancing the reliability of interactions with Hadoop Distributed File System. It also enables running tests in debug mode to facilitate easier troubleshooting and development.

How to use it

The fix is applied internally through the updated libhdfs3 library; no user action is required beyond upgrading to the new ClickHouse version containing this fix.

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