Hi, @marko, it seems that the fixing for MDEV-28689 is buggy. The lock thd->data_mutex is still not released during erroneously writing to the destination stream and writing to the destination stream (Line 246 and 256).
Due to the original issue is closed, thus I just open a new issue.
Thank you Ryan, indeed in MDEV-28689 I only fixed problems related to the ctrl_mutex by removing that mutex. The function compress_write() fails to release the data_mutex in case it fails to write to the stream.
Marko Mäkelä
added a comment - Thank you Ryan , indeed in MDEV-28689 I only fixed problems related to the ctrl_mutex by removing that mutex. The function compress_write() fails to release the data_mutex in case it fails to write to the stream.
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Marko Mäkelä
Ryan
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Critical 
Thank you Ryan, indeed in
MDEV-28689I only fixed problems related to the ctrl_mutex by removing that mutex. The function compress_write() fails to release the data_mutex in case it fails to write to the stream.