What’s New in This Release

Introduction

This maintenance release includes many bug fixes, updates, and improvements to GridGain. In addition to the Fixed Issues, this release includes:

  • Improved/augmented messages, monitoring, and logging for various components.

  • Fixed memory leaks, improved performance.

  • Several improvements to Web Console (see Management and Monitoring Changes below).

Changes in Behavior

Detailed Transaction Information Flag

We added a new flag (--tx --info <id>) to the control.sh|bat command to get additional information about a specified transaction.

<id> can be any single transaction identifier in one of several formats. xid or nearXid can be passed as GridCacheVersion or UUID.

control.sh --tx --info 2abc7b6aa61-00000000-0a13-93b4-0000-000000000007 control.sh --tx --info GridCacheVersion [topVer=169335904, order=1557855907152, nodeOrder=3]

The information returned includes:

  1. Initiator node

  2. Transaction parameters: isolation, concurrency, timeout, topology version on which the transaction is/was executed, used caches and groups, transaction states (which can differ across the cluster)

  3. Transaction topology (affected nodes):

    • Transaction mappings

      • Each node can handle several mappings where a mapping is a subset of keys affected the by transaction. A mapping can be either:

        • NEAR - local node is a transaction initiator

        • DHT - current keys subset belongs to primary partitions

        • REMOTE - current keys subset belongs to backup partitions

      • Dependencies between mappings (e.g. each REMOTE mapping has primary node which owns the same keys in primary partitions)

      • Mapped keys for each mapping and their parameters. Mappings include:

        • Affected keys

        • Their type of access (can be write or read) and their lock ownership status (can be either NO_LOCK - lock is not acquired yet, OWNS_LOCK - key lock is acquired by requested transaction and AWAITS_LOCK - means transaction is waiting for when another transaction will release lock for corresponding key). Example: Write [lock=OWNS_LOCK]: IgniteTxKey [key=KeyCacheObjectImpl [part=108, val=108, hasValBytes=true], cacheId=1544803905]

This can also work for transactions that have already finished. If the specified transaction persists in the commit/rollback history, all occurrences of the transaction will be printed to output. Example:

Control utility [ver. 2.7.0-SNAPSHOT#20190415-sha1:DEV]
2019 Copyright(C) Apache Software Foundation
User: JUser
Time: 2019-05-15T04:44:48.586
--------------------------------------------------------------------------------
Active transactions not found.
Will try to peek history to find out whether transaction was committed / rolled back.
Transaction was found in completed versions history of the following nodes:
TcpDiscoveryNode [id=b0168b23-ff69-41e6-a044-8ce189800000, addrs=[127.0.0.1], order=1, ver=2.7.0#20190415-sha1:00000000, isClient=false, consistentId=bltTest0]:
State: COMMITTED
TcpDiscoveryNode [id=cc9953a2-2a3e-47c3-83c8-329259900001, addrs=[127.0.0.1], order=2, ver=2.7.0#20190415-sha1:00000000, isClient=false, consistentId=bltTest1]:
State: COMMITTED

...

Known Issue

There’s a compatibility issue between 8.5.8 and version 8.4.4.

Issue GG-18858: The file <dbpath>/<cache_name>/cache_data.dat is not deleted on 8.4.4 on IgniteEx#destroyCache0.

Workaround: Do not execute DROP TABLE queries and do not destroy caches when performing a rolling upgrade from 8.4.4 to 8.5.8.

Installation and Upgrade Information

See the Rolling Upgrades page for information about how to perform automated upgrades and for details about version compatibility.

Fixed Issues

GridGain Community Edition Changes

IGN-13929

Cache

Avoid potential ClassNotFoundException when replacing null value.

IGN-13811

Cache

Fixed missing dependencies in cassandra-store module.

IGN-13594

Cache

Fixed issue with TTL manager sometimes not cleaning entries from the underlying store.

IGN-13516

Cache

Fixed: cache.get() sporadically returns 'null' if a remove with skip store is invoked concurrently.

IGN-6961

Cache

Fixed hanging parallel write&evict in CacheWriteBehindStore.

GG-18877

Communication

No thread dumps for tcp-comm-worker thread appear in server logs when client node fails abruptly.

IGN-13950

Control Utilities

Improved error message when connecting to secured cluster without credentials.

GG-17426

Control Utilities

Fixed exception when snapshot-utility accesses a file of zero size.

GG-17344

Control Utilities

Idle-verify: cache-filter 'ALL' will validate system caches, added cache-filter 'USER'.

IGN-12317

Data Structures

Fixed sporadic IgniteQueue hang caused by an incorrect CQ listener notification logic.

IGN-13891

Deployment

Fixed an issue with loading different class loaders through p2p.

IGN-13699

Diagnostic

Added Information about possible long GC pauses during waiting and holding checkpoint write lock.

IGN-13540

Diagnostic

Improved LRT diagnostic messages: now request from local node is sent to the nearest node to get the dump of a thread that started the transaction.

IGN-13466

Diagnostic

Added consistentId to "Node FAILED" message.

IGN-13334

Diagnostic

Added additional logging for client-server connections in TCP-discovery.

IGN-13276

Diagnostic

Added --tx --info command which provides the ability to retrieve verbose information about a specific transaction: key lock ownership, state and topology. See Detailed Transaction Information Flag.

GG-14951

Diagnostics & Failure Handling

Improvements in checking to see if an Exchange worker is alive.

GG-14950

Diagnostics & Failure Handling

Added configuration parameters for checking to see if system workers are alive.

GG-14857

Diagnostics & Failure Handling

Added monitoring of critical system workers.

IGN-13543

Discovery

Fixed infinite 'no next node in topology' loop in TcpDiscoverySpi.

IGN-13131

Discovery

Grid components of a joining node are initialized with configurations from the grid at the end of join.

GG-18567

Discovery

Fixed compatibility with old versions.

IGN-13116

Metrics

Added getTotalUsedPages property for DataRegionMetrics, which shows the total number of pages used for storing the data.

IGN-13260

Partition Map Exchange

Fixed uncaught exception in TTL during partition map exchange.

GG-17327

Partition Map Exchange

Avoid keeping metrics-related data in exchange history.

GG-18846

Persistent Storage (WAL, Recovery)

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

GG-18738

Persistent Storage (WAL, Recovery)

Fixed possible data storage corruption on start in no-WAL-archiver mode.

GG-18736

Persistent Storage (WAL, Recovery)

Introduced SYSTEM_CRITICAL_OPERATION_TIMEOUT failure type.

GG-18860

Platform .NET

Fixed LINQ support for .NET Core 2.1.

IGN-13941

Rebalance

Fixed node distribution of demanded cache partitions during rebalancing.

GG-18587

Security

Fix false-positive detection of cluster in not idle state with enabled security.

GG-17465

Security

Fixed false-positive detection of cluster in not idle state with enabled security.

GG-14807

Security

Avoid removing expired session from cache on a deactivated cluster.

IGN-13951

SQL

Fixed memory leak in connection manager.

IGN-13783

SQL

Fixed case when index rebuild broke consistency between partition and index itself.

IGN-13704

SQL

Static cache configuration should not override persisted cache configuration.

GG-18857

SQL

Fixed example CacheClientBinaryQueryExample.

GG-17434

SQL

Fixed memory leak on unstable topology caused by partition reservation.

GG-17339

SQL

Fixed memory leak at the JDBC Thin Driver caused when executing any statement.

GG-17326

SQL

Removed field from internal stored schema properly when the DROP COLUMN statement is executed.

GG-14963

SQL

Fixed hang on cancel query when the query is executed in lazy and distributed joins modes.

GG-14873

SQL

Avoid key/val ownership resolution of a field in runtime.

IGN-13002

Tooling

Added ability to use multiple cache filter options for idle_verify command simultaneously, also support for using regular expressions instead of cache names.

IGN-13792

Transactions

Fixed transaction hang when sessionEnd throws an exception.

IGN-13624

Transactions

Optimized amount of heap space used for affinity assignment history storing.

IGN-13286

Transactions

Fixed potential memory leak.

IGN-12198

Transactions

Provided description for org.apache.ignite.mxbean.TransactionMetricsMxBean.

GG-17488

Transactions

Fixed memory leak in the GridCacheTxFinishSync#threadMap.

GridGain Enterprise Edition Changes

GG-17429

Data Center Replication

Fixed deadlock between partition map exchange and the initialization of the Data Center Recovery component.

GridGain Ultimate Edition Changes

GG-18658

Point-in-Time Recovery

Fixed null pointer exception in logs when server nodes leave cluster during snapshot.

GG-14777

Point-in-Time Recovery

Fixed: issue with hanging automatic snapshot when system property is set inconsistent in the cluster.

GG-14760

Point-in-Time Recovery

Fixed possible hang on snapshot operation.

Management and Monitoring Changes

IGN-12276

Web Console

Improved support for JDBC drivers on project generation.

GG-18097

Web Console

Added confirmation on changing snapshot schedule enabled state.

GG-18011

Web Console

Added column with node type: coordinator/server on "Baseline" screen.

GG-17784

Web Console

Fixed usability issue when cluster has caches with groups.

GG-18511

Web Console

Added "Pause/Resume/Bootstrap" actions on "Data Center Replication" screen.

GG-17375

Web Console

Implemented support for Mongo 4.x and latest Ubuntu.

Related Information

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