# Aerospike Database 6.0.0.0-rc6 (April 11, 2022)

**URL:** <https://discuss.aerospike.com/t/aerospike-database-6-0-0-0-rc6-april-11-2022/9339>\
**Category:** Releases (Server, Client & Tools)\
**Created:** [April 12, 2022, 6:17am UTC](https://discuss.aerospike.com/t/aerospike-database-6-0-0-0-rc6-april-11-2022/9339 "2022-04-12T06:17:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mcoberly](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/mcoberly/32/637_2.png) [@mcoberly](https://discuss.aerospike.com/u/mcoberly)\
**Post date:** [April 12, 2022, 6:17am UTC](https://discuss.aerospike.com/t/aerospike-database-6-0-0-0-rc6-april-11-2022/9339/1 "2022-04-12T06:17:59Z")

</div>

[Aerospike Database version 6.0.0.0-rc6](https://www.aerospike.com/download/server/notes.html#6.0.0.0-rc6)was released on April 11, 2022.

This major release contains New Features, Improvements & an Update.

- **This is a Developer Preview Release.**
- **When upgrading to server version 6.0, you must wipe the drives.** A modified record storage format was introduced by AER-6513, which adds protection against partially written records during an unclean shutdown.
- For upgrading, or the unlikely event of downgrading, please refer to [Special Upgrades](https://docs.aerospike.com/operations/upgrade/special_upgrades).
- BREAKING CHANGE: The `truncate` privilege is now a separate privilege and is no longer under `write` .
- The batch operations capability has been made comprehensive. We now fully support batch reads, writes, deletes, and UDF commands.
- The previously deprecated Predicate Expression API has been removed. Use [Aerospike Filter Expressions](https://docs.aerospike.com/guide/expressions) (added in version 5.2).
- Service context configuration [`paxos-single-replica-limit`](https://docs.aerospike.com/reference/configuration#paxos-single-replica-limit) has been removed.
- The [`jobs`](https://docs.aerospike.com/reference/info#jobs) info command is now officially deprecated and will continue to be supported through a deprecation period, after which it will be removed. [`jobs`](https://docs.aerospike.com/reference/info#jobs) are now redundant with the new secondary index building methods and the following new info commands:
  - [`scan-show`](https://docs.aerospike.com/reference/info#scan-show) replaces `scan-list` .
  - [`query-show`](https://docs.aerospike.com/reference/info#query-show) replaces `query-list` .
  - [`query-abort`](https://docs.aerospike.com/reference/info#query-abort) replaces `query-kill` .

- The configuration parameter [`batch-without-digests`](https://docs.aerospike.com/reference/configuration#batch-without-digests), now defaults to true, is deprecated and will be removed in six months. Customers using clients older than a year (around the time of Server 4.9 which introduced [`batch-without-digests`](https://docs.aerospike.com/reference/configuration#batch-without-digests)) will now have to explicitly set the [`batch-without-digests`](https://docs.aerospike.com/reference/configuration#batch-without-digests) configuration item to false.
- A number of [`Best Practices`](https://docs.aerospike.com/operations/install/linux/bestpractices) will be checked at startup. The Best Practices can be enforced by enabling the new [`enforce-best-practices`](https://docs.aerospike.com/reference/configuration#enforce-best-practices) configuration item.
- Use [Prometheus Exporter](https://enterprise.aerospike.com/download/monitoring/aerospike-prometheus-exporter/notes.html) version 1.2.1 or later to run Prometheus Exporter with this version of Aerospike Server.

#### New Features

- Enterprise & Community
  - [AER-6511] - (PACKAGING) Added support for Debian 11.
  - [AER-6512] - (PACKAGING) Removed support for Debian 8.
  - [AER-6500] - (QUERY) Enhanced secondary index queries: query by partition, paginate, throttle, apply quotas.

#### Improvements

- Enterprise & Community
  - [AER-6488] - (BALANCE) For AP namespaces, made namespace context configuration item [`replication-factor`](https://docs.aerospike.com/reference/configuration#replication-factor) dynamic.
  - [AER-6489] - (BALANCE) Removed service context configuration item [`paxos-single-replica-limit`](https://docs.aerospike.com/reference/configuration#paxos-single-replica-limit).
  - [AER-6499] - (BATCH) Added support for batch writes, deletes, and UDFs.
  - [AER-6509] - (DEPLOYMENT) With [`auto-pin numa`](https://docs.aerospike.com/reference/configuration#auto-pin), handle client interfaces with differing numbers of queues.
  - [AER-6492] - (EXPRESSIONS) Removed support for predicate expressions.
  - [AER-6485] - (KVS) Fail duplicate resolutions if they are overwhelming the write queue.
  - [AER-6504] - (KVS) Check ‘rw-hash’ and ‘proxy-hash’ for timed out transactions more frequently, to help the client recycle sockets more efficiently.
  - [AER-6510] - (MIGRATION) Do not retransmit updated or deleted records.
  - [AER-6515] - (PACKAGING) Ensure that the ‘aerospike’ user has a secure nologin shell.
  - [AER-6506] - (SCAN) Unified scans with new queries.
  - [AER-6491] - (STATS) Latency histograms now include time spent processing other service epoll events that precede the transaction request.
  - [AER-6507] - (STATS) Base [`heap_efficiency_pct`](https://docs.aerospike.com/reference/metrics#heap_efficiency_pct) on active rather than mapped memory.
  - [AER-6513] - (STORAGE) Detect and mitigate records which are only partially written during an unclean shutdown.
  - [AER-6514] - (STORAGE) Verify that a device not previously used as an Aerospike storage device was erased before use.
  - [AER-6503] - (UDF) Removed unused ‘gen’ field from [`udf-get`](https://docs.aerospike.com/reference/info#udf-get) response, and added sanity check of ‘content-len’ field in [`udf-put`](https://docs.aerospike.com/reference/info#udf-put) command.

- Enterprise Only
  - [AER-6495] - (ACL) Added a separate ‘truncate’ privilege (no longer under ‘write’), ‘udf-admin’ privilege, and ‘sindex-admin’ privilege.
  - [AER-6487] - (BALANCE) To restore availability, revived nodes now require all nodes to be trusted (i.e. no e-flags).
  - [AER-6505] - (LOGGING) Separated relevant XDR per-DC ticker line items into per-namespace lines.
  - [AER-6501] - (SECURITY) Added support for a special Enterprise build which is FIPS 140 compliant.
  - [AER-6483] - (XDR) Added DC namespace context configuration item [`compression-threshold`](https://docs.aerospike.com/reference/configuration#compression-threshold) to specify a size threshold for compression.
  - [AER-6490] - (XDR) Added value ‘no-bins’ to DC namespace context configuration item [`bin-policy`](https://docs.aerospike.com/reference/configuration#bin-policy), to ship record metadata only, including keys, to connectors.
  - [AER-6497] - (XDR) Reapply set shipping filters, and other configured filters, during retries.
  - [AER-6498] - (XDR) Changed automatic throttling to reduce throughput more quickly, with a lower floor.

#### Known Issues

- [Known Issues: Server](https://docs.aerospike.com/reference/known_issues?version=6.0.0.0-rc6)

#### Updates

- **aerospike-tools** [7.0.0](https://enterprise.aerospike.com/download/tools/7.0.0/)