ClickHouse/docs/changelogs/v21.1.6.13-stable.md

ClickHouse release v21.1.6.13-stable FIXME as compared to v21.1.5.4-stable

Bug Fix

• Backported in #20637: Fix rare bug when some replicated operations (like mutation) cannot process some parts after data corruption. Fixes #19593. #19702 (alesapin).
• Backported in #20573: Fix crash which could happen if unknown packet was received from remove query (was introduced in #17868). #20547 (Azat Khuzhin).
• Backported in #21005: Fix 'Empty task was returned from async task queue' on query cancellation. #20881 (Azat Khuzhin).
• Backported in #21131: Fixed behaviour, when ALTER MODIFY COLUMN created mutation, that will knowingly fail. #21007 (Anton Popov).
• Backported in #21250: - Block parallel insertions into storage join. #21009 (Vladimir C).
• Backported in #21068: Out of bound memory access was possible when formatting specifically crafted out of range value of type DateTime64. This closes #20494. This closes #20543. #21023 (Alexey Milovidov).
• Backported in #21229: Fixes #21112. Fixed bug that could cause duplicates with insert query (if one of the callbacks came a little too late). #21138 (Kseniia Sumarokova).
• Backported in #21277: Fix bug with join_use_nulls and joining TOTALS from subqueries. This closes #19362 and #21137. #21248 (Vladimir C).