ScyllaDB Open Source 4.4.2

The ScyllaDB team announces ScyllaDB Open Source 4.4.2, a bugfix release of the ScyllaDB 4.4 stable branch.

ScyllaDB Open Source 4.4.2, like all past and future 4.x.y releases, is backward compatible and supports rolling upgrades.

Related links

• ScyllaDB Open Source 4.4
• Get ScyllaDB Open Source AWS AMI, Docker, GCP Image, binary packages and unified installer
• Upgrade from ScyllaDB Open Source 4.x.y to ScyllaDB Open Source 4.x.z
• Upgrade from ScyllaDB Open Source 4.3.x to 4.4.y
• Please let us know if you encounter any problems.

Issues fixed in this release:

• Tools: sstableloader doesn’t work with Alternator tables if “-nx” option is used #8230
• Install: Unified Installer: Incorrect file security context cause scylla_setup to fail #8589
• Install: nonroot installation broken #8663
• Install: dist/redhat: stop using systemd macros, call systemctl directly #8005
• Install: Dynamic setting of aio-max-nr based on the number of cpus, mostly needed for large machines like EC2 i3en.24xlarge #8133
• CQL: Mismatched types for base and view columns id: timeuuid and timeuuid, generating ”Unable to complete the operation against any hosts” error  #8666
• Stability: Exceptions in resharding and reshaping are being incorrectly swallowed #8657
• Stability: Repairing a table with TWCS potentially cause high number of parallel compaction #8124
• Stability: TWCS: in some cases, SSTables are not compacted together when time window finishes #8569
• Stability: materialized views: nodes may pull old schemas from other nodes #8554
• Stability: reader_concurrency_semaphore: inactive reads can block shutdown #8561
• Stability: a regression in ScyllaDB 4.4, Seastar scheduler configured with 2x less throughput than it should, results in a “oversized request (length $A) submitted. dazed and confuzed, trimming its weight from $B down to $C” error  #8496
• Stability: disks with tiny request rate may cause ScyllaDB to get stuck while upgrading from 4.3 to 4.4 #8378
• Stability: `cache_flat_mutation_reader` position-fast-forwards readers that are not inside a partition, if they immediately return eof
• Stability : Optimized TWCS single-partition reader opens SSTables unnecessarily #8432 #8435
• Stability: “Reader was forwarded before returning partition start” Exception using TWCS in 4.4 #8411
• Stability: `time_series_sstable_set::create_single_key_sstable_reader` may return an empty reader even if the queried partition exists (in some other SSTable) #8447
• Stability: `clustering_order_reader_merger` may immediately return end-of-stream if some (but not necessarily all) underlying readers are empty #8445
• Test: Repair session failed (NoCorruptRepair and TerminateAndReplaceNode nemesis, CDC test) #8296

26 May 2021