Aerospike Database Release Notes 6.1.0.1

August 30, 2022

New in this version

This version implements a variety of feature requests and improvements to enhance performance, usability and reliability.

Enterprise, Federal and Community editions

(SINDEX) Secondary index names now have a 64-character limit (including a null terminator).
[AER-6545] - (SINDEX) Added ability to define secondary indexes on elements within CDTs (Collection Data Types), by using CDT contexts.
Added list operation EXISTS return type.
Added map operation EXISTS return type.
Server 6.1 removes num-partitions and adds the sindex-stage-size configuration parameter for secondary indexes in the namespace context. sindex-stage-size is similar to the existing primary index index-stage-size configuration parameter. If the sindex-stage-size value is changed across a restart, any secondary indexes for the namespace will be rebuilt.
Server 6.1 includes a simple feature key file allowing only for a single-node cluster. The feature key will not be valid for versions after server 6.1.
- Be aware of your package manager's handling of existing configuration files during installation. If the configuration file was updated we keep the existing *.deb or *.rpm respective configuration file. It is the uninstall of the package where these systems diverge.
  - Debian and Ubuntu (*.deb) leaves the modified configurations in place.
  - Redhat (*.rpm) renames the configuration file with an *.rpmsave extension.

Enterprise and Federal editions only

Attempting to create a secondary index which already exists now returns success/OK instead of an error.
You can create Map indexing and List indexing at any depth. For example, you can create an index on a map inside of a bin that is inside of another map.
Debian 9 Stretch LTS reached its End of Life on June 30 2022. Aerospike will drop support for Debian 9 in the server 6.2 release.
See Platform support and compatibility for all currently supported platforms.
Aerospike Tools 7.2.0

Enterprise, Federal & Community

[AER-6530] - (BATCH) Added an option to ensure that a sub-transaction error that stops a response will be included in the response.
[AER-6532] - (CDT) Added EXISTS return type, which may be used to optimize certain GET operations.
[AER-6535] - (INFO) Added sindex-name field to query-show output.
[AER-6548] - (INFO) Added smd-show command to retrieve raw SMD module data.
[AER-6531] - (LOGGING) Added long-queries to in-progress ticker line, and renamed queries_active to long_queries_active.
[AER-6537] - (QUERY) Partially de-duplicate responses to range queries on list or map secondary indexes.
[AER-6546] - (SINDEX) When indexing list or map keys or values, iterate in msgpack directly instead of converting to as_list or as_map.
[AER-6550] - (SINDEX) A secondary index without a set name now applies to the entire namespace.
[AER-6551] - (SINDEX) The size limit for a secondary index name has been reduced to 64.
[AER-6547] - (STATS) Added entries_per_bval and entries_per_rec secondary index cardinality statistics.
[AER-6534] - (UDF) New as_map implementation improves (de-)serialization of ordered maps when executing UDFs.

Enterprise & Federal Only

[AER-6549] - (DEPLOYMENT) Automatically install an Enterprise evaluation feature key.
[AER-6538] - (SINDEX) For index-type flash namespaces, use smaller internal batch sizes for garbage collection and queries, to minimize time under lock.
[AER-6540] - (STATS) Added bytes_shipped namespace statistic in XDR.
[AER-6544] - (XDR) For connector destinations, use digest affinity (instead of round-robin) to ensure that a record always goes to the same node.
[AER-6565] - (XDR) Distribute recovery/rewind requests across service threads using partition affinity, avoiding lock contention and significantly improving performance.

Before you upgrade, find any secondary index names that exceed the new 64-character limit (including a null terminator), delete them, then recreate the sindex with a shorter name after the upgrade.
- When upgrading, the secondary index sindex-create applies to the entire namespace, if the set parameter is omitted.
Downgrade from Aerospike Database 6.1 to 6.0.
- If you have to downgrade from a deployment of server 6.1 that has a secondary index stored in shared memory, delete the shared memory segments after stopping the server (asd), in order to reclaim this memory.
- Downgrading from Server 6.1 forces a cold start.

Use Prometheus Exporter version 1.2.1 or later to run Prometheus Exporter with Aerospike server 6.1.

If you use equality secondary index queries that return a small number of records, you may see a latency increase in server releases 6.0-6.2. The inline-short-queries configuration option provides a partial fix in server 6.3, and a more advanced fix is scheduled for server 6.4.
If your secondary index query only returns 0 records or 1 record, meaning that it is acting as a unique index, you should consider converting such a query to a get/exists operation by creating a self-managed reverse index (lookup table).
Spark Connector version 3.5 starts using batch writes when possible, a feature which was introduced in Aerospike server version 6.0. Consult the Spark Connector rate limiting documentation before you upgrade the server. Pay attention to throttling write throughput, and use Spark Connector 3.5.5 or later, which fixes throttling behavior to conform to the aerospike.transaction.rate.
There is a possibility of partial de-duplicate (repeated records) in secondary index query (SI query) responses for SI queries that use list or map type secondary indexes. Any record that satisfies such a query at least once will be included, but it is possible and normal to see a record more than once.
Known issues for Server 6.1.0.1