What’s New in This Release

Introduction

This release includes one new feature — Snapshot Security — and several bug fixes.

New Feature: Snapshot Security

Snapshot Security helps ensure the integrity of each snapshot file and the overall snapshot process.

When enabled, Snapshot Security provides an additional layer of security, protecting data from modification and corruption and from snapshot file version mismatch. It helps eliminate the possibility of accidentally using files from multiple versions of snapshots. For example, suppose you have 2 snapshots: A and B. It may be possible to accidentally use file1.dat and file 2.dat from Snapshot A, and file3.dat from snapshot B by mistake.

Snapshot Security creates a file registry that contains a list of all of the files included in the snapshot, and their cryptographic hashes. Before being restored, snapshots are compared against this registry to ensure they contain the proper files.

Snapshot Security protects files from substitution; however, it does not protect against malicious actions by hackers/etc.

Enable Snapshot Security via the GG_SNAPSHOT_SECURITY_LEVEL system property.

Parameter Description

DISABLED

Snapshot file registry is not created and never validated if present (default).

IGNORE_EXISTING

Snapshot file registry is included in new snapshots. Existing file registries in snapshots are not verified.

IGNORE_MISSING

Snapshot file registry is included in new snapshots.

Existing file registries in snapshots DO GET verified.

Missing file registries in snapshots are tolerated.

REQUIRE

Snapshot file registry is included in new snapshots. Presence and validity of file registries in all snapshots are required.

Known Issues

GG-24105

Conflicts in hashes of primary/backup partitions after node restart (in-memory caches)

GG-23120

AssertionError Missing tails occurs in scenario with starting node after leaving while creating new index

Fixed Issues

GridGain Professional Edition Changes

GG-20539

.NET

Fixed .NET continuous query "Removed" event registration.

GG-19508

Atomic Cache

Assertion error on near node when backup replica failed during atomic operation.

GG-20877

Communication

U.getLocalHost must always returns physical network interface address.

GG-19216

Communication

Fixed triggering of Failure Processor when exchange thread is blocked on sending message to client node.

GG-20871

Communication

Fixed log reduction for case of long getting communication TCP client when client is already unavailable, now client information is logging properly.

GG-20167

Diagnostics & Failure Handling

List of files containing in classpath is printed on the start of the node. It can be disabled by setting ignite system property 'IGNITE_LOG_CLASSPATH_CONTENT_ON_STARTUP' to false. By default, it is enabled.

GG-19222

Diagnostics & Failure Handling

Added diagnostic ability for dumping page locks' state similar to thread dump.

GG-19974

Diagnostics & Failure Handling

Added diagnostic tool of dumping WAL page history in case of B+Tree corrupting.

GG-19678

Diagnostics and Failure Handling

Fixed false-positive failure handler triggering on exchange thread.

GG-19647

Discovery

Implemented more precise timeouts calculations in Discovery and Communication SPI.

GG-19315, GG-20865

Discovery

Client node cut off by communication from the rest of the cluster is stopped by Communication Failure Resolver.

GG-19640

Discovery

Discovery events processing optimized by lazy initialization of discovery events names.

GG-20971

Integrations

Upgrade jackson-databind library to version 2.9.9

GG-20976

Integrations

Upgrade commons-codec library to version 1.12

GG-15000

Metrics & Monitoring

Added IO statistics for logical and physical page reads.

GG-18754

Partition Map Exchange

Fix several partition consistency issues arising on node failures.

GG-19991

Partition Map Exchange

Added diagnostic output for coordinator change process.

GG-19910

Rebalance

Rebalance properties were moved from CacheConfiguration to IgniteConfiguration level. Rebalance properties in CacheConfiguration were deprecated.

GG-20977

Security

Upgrade Jetty library to version 9.4.18

GG-20370

Security

Fixed bug around failing to connect by JDBC with read-only permissions.

GG-20158

SQL

Message "Indexes rebuilding completed for all caches." appears in log after all indexes are rebuilt. This requires at least one index to be rebuilt successfully.

GG-19156

Storage Engine

Introduce multithreading recovery logic in order to improve node startup time.

GG-19964

Storage Engine

Fixed "Compression of WAL segment was skipped due to unexpected error" spam on node start when WAL compaction is enabled.

GG-20849

Storage Engine

WAL segments serialization compatibility fixed.

GG-21366

Storage Engine

Fix threads parking for indefinite time during throttling after spurious wakeups.

GG-19949

Thin Clients

Thin client: removed limitation of the length of credentials during handshake.

GG-19332

Transactions

Prevent NPE on concurrent tx and cache destroy.

GG-23948

Deployment

Added retries on peer class loading timeouts.

GG-23883

SQL

Rename USE_POOL_FOR_LAZY property to IGNITE_USE_POOL_FOR_LAZY_QUERIES

GG-23833

Common

Logging of partitions information during recovery disabled by default

GG-23811

Common

Fix inconsistency between cache data and indexes when cache operation is interrupted

GG-23800

Storage Engine

Fixed possible PDS corrupt during checkpoint

GG-23660

Storage Engine

Fixed case when checkpoint tmp files were not removed on node start.

GG-23635

Visor

Visor GUI: Fixed showing of metadata for the first cache.

GG-23569

SQL

Lazy mode bugfux for local queries

GG-23385

Common

Default system worker blocked timeout changed to 2 minutes

GG-23357

Platforms & Thin Clients

Fixed OOM issue when invalid message was sent to thin client port

GG-23328

SQL

Fix assertion error in case of usage several iterators of lazy queries

GG-23283

SQL

Fix assertion error for several open iterator in lazy SQL mode

GG-23272

Transactions

Fix concurrency race in PagesWriteThrottle

GG-23271

SQL

Fix full indexes rebuild after each cluster’s restart.

GG-23024

SQL

H2 connection pool fix for reduce h2 connection timeouts.

GG-22943

SQL

Correctly remove index metapage, fixes inline size change on index recreate operations.

GG-22856

SQL

Fixed cost estimation bug for tree indexes.

GG-22811

SQL

Fix bug at the lazy execution mode for local SQL queries

GG-22447

Atomic Cache

Fixed possible StackOverflowError in scenario with huge batch within one transaction

GG-21726

Data Structures

Fixed issue with colocated IgniteSet rebalancing when stored object class is not available

GG-21085

SQL

Fix compatibility when JAVA_OBJECT is inlined to index

GG-20865

Discovery

Client node cut off by communication from the rest of the cluster is stopped by Communication Failure Resolver

GG-19640

Discovery

Discovery events processing optimized by lazy initialization of discovery events names.

GridGain Enterprise Edition Changes

GG-20162

Data Center Replication

Make debug logs more verbose.

GG-19280

Rolling Upgrade

Remove outdated compatibility tests.

GridGain Ultimate Edition Changes

GG-18733

Snapshots & Point in Time Recovery

AssertionError upon starting a node caused by logging page delta record before page snapshot.

GG-19368

Snapshots & Point in Time Recovery

Removed wrong "Can’t find snapshot metadata" message from logging.

GG-19982

Snapshots & Point in Time Recovery

Fixed NullPointerException in logs when server nodes leave cluster during snapshot.

Management and Monitoring Changes

GG-19203

Control Utility

control.sh output is duplicated to control-utility.log.

GG-19149

Control Utility

Added message that snapshot-utility is deprecated. Recommended using control.sh --cache idle_verify instead.

GG-19451

Control Utility

Fixed formatting in control.sh in idle_verify output, also added logging of parsed parameters of idle_verify.

GG-20289

Control Utility

control.sh string literal replaced with more common control.(sh|bat).

GG-20416

Control Utility

Error message contains info about SSL connectivity problems if connection to secured cluster fails.

GG-20851

Control Utility

snapshot-utility.out is stored in ${IGNITE_HOME}/work/log

GG-20854

Control Utility

UTC timezone is used in build dates now.

GG-20862

Control Utility

Removed caches argument at restore command.

GG-19365

Control Utility

Missing arguments added into usage section of snapshot-utility.sh help message.

GG-19995

Control Utility

Fixed mismatch between idle_verify results with and without -dump option in some cases.

Related Information

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