E.1. Postgres Pro Shardman 17.6.1 #
Release date: 2025-11-17
This release is based on PostgrePro Enterprise 17.6 and Postgres Pro Shardman 17.5.1 and provides new features, optimizations and bug fixes. Major changes are as follows:
E.1.1. Core and Extensions #
Added tha fast path optimization for queries that work with data located on the same partition.
SELECT,UPDATE,DELETEcommands and prepared statements are supported with Silk. Fast path cannot be used if theextra_float_digitsconfiguration parameter is less than 0. Disabled by default.Added a
public.list_always_shippable()function to the postgres_fdw that returns a list of always shippable procedures.Added support for the Postgres Pro Shardman metadata reading in pgpro_controldata.
Allowed displaying statistics on size of the
MT_SPImessage components (bytes) sent from the node with theshardman.pg_stat_silk_msg_componentsview.Added a limitation for the local tables that now cannot inherit global tables.
Added a feature to assign a row-level security (RLS) policy to global and sharded tables.
Added support for the extended password policies and global profiles with the shardman.extended_password_policies configuration parameter and the shardman.extended_password_policies_skip_users configuration parameter to specify system users for which no exchange of information on authorization events between Postgres Pro Shardman cluster nodes takes place and which cannot be locked. They, however, can be authorized on a Postgres Pro Shardman standby.
Added support for resolving multiple addresses when configuring a foreign server for Silk.
Added two
READ COMMITTEDmodes to avoid dirty reads, with or without the support of the CSN snapshot per top-level statement managed by the enable_csn_snapshot_for_read_committed configuration parameter.Limited the
shardman.sync_schemaediting to the superuser privileges.Introduced SSL support for Silk.
Updated functions of the
shardman.try_advisory_xact_lock*()type that now returnfalseinstead of throwing an error.Updated the shard creating process, now the
postgresDB is automatically created on a referee node.Updated the supported version of pgpro_pwr to 4.10.
Updated the supported version of amcheck to 1.4.
Updated the supported version of aqo to 3.1.
Updated the supported version of dblink to 1.2.
Updated the supported version of pg_proaudit to 2.0.
Updated the supported version of pg_query_state to 1.2.
Updated the supported version of pgpro_stats to 1.9-sdm4.
Updated the supported version of pg_filedump to 18.0.
Updated the supported version of pgpro_controldata to 18.1.
Updated the supported version of postgres_fdw to 1.4.
Updated the supported version of ptrack to 2.5.
E.1.2. Management Utilities #
Added support for the protected mode on the biha control channel.
Added a feature of a cluster restart with minimum downtime by means of the
shardmanctl restart rollingcommand.Added a shardmand mechanism that allows showing the services that are currently running in the system.
Added new configuration parameters to work with syncpoints:
syncpointIntervalthat allows specifying how often is a syncpoint created (in seconds),syncpointEnabledthat enablesmonitorthat periodically creates syncpoints, andsyncpointLimitthat specifies the amount of the most recent syncpoints stored.Allowed executing commands outside of the transaction block with the
--no-transactionflag of theshardmanctl forallcommand.Allowed viewing a list of sharded and global table information with the shardmand endpoint
/shardmand/v1/tables.Added a feature to start a cluster with SSL certificate-based authentication.
Added a maintenance user option under which deadlock detector and monitor of hanging transactions can be run.
Allowed defining a variable for use by a custom script with a new shardmanctl bench run -D flag.
Changed the BiHA configuration update algorithm. Now the follower and referee nodes wait until the configuration is updated on the leader and only then update their own configuration. This allows decreasing the
max_wal_sendersparameter value.Disabled coloring of the log level when executing any
shardmanctlcommand.Guaranteed the data consistency when forming user lists.
Improved the
shardmanctl config updatecommand output wording in case of an error.Lifted a limitation, now global and sharded tables can be created during a backup process.
Lifted the limitation for decreasing of sensible specification parameters, such as
max_connections,max_prepared_transactions, andmax_worker_processes. Previously it could result in the configuration rollback issues.Updated the integrity check that now can be run after every configuration update if
certVersionis set totrue.Updated the
keeperconnection behavior, now it is held instead of being closed.Updated the consistency and user schema check mechanisms.
Updated the shardmanctl config update command that now can modify specifically the
certVersionparameter.Updated the admin role privileges, it can now modify the shardman.sync_schema configuration parameter.
Updated the etcd client version to 3.6.4.
Updated the “smart” restoration of the
shardmanschema. Nowshardmanctl schema restore --smartchecks and restores all lacking PostgreSQL extensions correctly.Updated the system behavior for the
shardmanctl probackup backup. Now, when creating a backup, it waits for the leader and standbys to be ready, thus avoiding the leader switching to theRO(Read-only) state when the command is executed.Fixed the
PANIC-level error when runningshardmanctl set.Fixed a bug that previously resulted in the
referee_with_walfailure at a Postgres Pro Shardman cluster with tablespaces startup.Fixed the BDU:2025-02344 and GHSA-fv92-fjc5-jj9h vulnerabilities.
Fixed the GO-2025-3770 vulnerability.
Fixed a bug that, in some rare cases, resulted in
shardmanctl statusfailure.Fixed a bug that previously resulted in adding new nodes failure if the
shardmanschema had global tables with data.Fixed the behavior that previously resulted in replication failure if BiHA and
postgresuser passwords were different.Fixed a bug, previously it was impossible to add new cluster nodes if the
shardmanschema contained global sequences.Fixed the referee nodes failure in cases when the following parameters were changed:
max_connections, max_wal_sendersshared_buffers,max_prepared_transactions,max_worker_processes.Fixed extensions restore, now all extensions are restored and not only those of Postgres Pro Shardman.
Fixed a bug that resulted in
PANICduring the rebalance process.Fixed an issue that could result in instances restart due to a short connection loss with etcd.
Fixed the displaying of the restoring progress indicators.
Fixed a bug that previously resulted in the single shard restore process hanging.
Fixed the initialization failure in cases when
svt5was enabled.