Igniters, We've uploaded a 2.7.0 release candidate to
https://dist.apache.org/repos/dist/dev/ignite/2.7.0-rc1/ Git tag name is 2.7.0-rc1 This release includes the following changes: Apache Ignite In-Memory Database and Caching Platform 2.7 --------------------------------------------------------- Ignite: * Added experimental support for multi-version concurrency control with snapshot isolation - available for both cache API and SQL - use CacheAtomicityMode.TRANSACTIONAL_SNAPSHOT to enable it - not production ready, data consistency is not guaranteed in case of node failures * Implemented Transparent Data Encryption based on JKS certificates * Implemented Node.JS Thin Client * Implemented Python Thin Client * Implemented PHP Thin Client * Ignite start scripts now support Java 9 and higher * Added ability to set WAL history size in bytes * Added SslContextFactory.protocols and SslContextFactory.cipherSuites properties to control which SSL encryption algorithms can be used * Added JCache 1.1 compliance * Added IgniteCompute.withNoResultCache method with semantics similar to ComputeTaskNoResultCache annotation * Spring Data 2.0 is now supported in the separate module 'ignite-spring-data_2.0' * Added monitoring of critical system workers * Added ability to provide custom implementations of ExceptionListener for JmsStreamer * Ignite KafkaStreamer was upgraded to use new KafkaConsmer configuration * S3 IP Finder now supports subfolder usage instead of bucket root * Improved dynamic cache start speed * Improved checkpoint performance by decreasing mark duration. * Added ability to manage compression level for compressed WAL archives. * Added metrics for Entry Processor invocations. * Added JMX metrics: ClusterMetricsMXBean.getTotalBaselineNodes and ClusterMetricsMXBean.getActiveBaselineNodes * Node uptime metric now includes days count * Exposed info about thin client connections through JMX * Introduced new system property IGNITE_REUSE_MEMORY_ON_DEACTIVATE to enable reuse of allocated memory on node deactivation (disabled by default) * Optimistic transaction now will be properly rolled back if waiting too long for a new topology on remap * ScanQuery with setLocal flag now checks if the partition is actually present on local node * Improved cluster behaviour when a left node does not cause partition affinity assignment changes * Interrupting user thread during partition initialization will no longer cause node to stop * Fixed problem when partition lost event was not triggered if multiple nodes left cluster * Fixed massive node drop from the cluster on temporary network issues * Fixed service redeployment on cluster reactivation * Fixed client node stability under ZooKeeper discovery * Massive performance and stability improvements Ignite .Net: * Add .NET Core 2.1 support * Added thin client connection failover Ignite C++: * Implemented Thin Client with base cache operations * Implemented smart affinity routing for Thin Client to send requests directly to nodes containing data when possible * Added Clang compiler support SQL: * Added experimental support for fully ACID transactional SQL with the snapshot isolation: - use CacheAtomicityMode.TRANSACTIONAL_SNAPSHOT to enable it - a transaction can be started through native API (IgniteTransactions), thin JDBC driver or ODBC driver - not production ready, data consistency is not guaranteed in case of node failures * Added a set of system views located in "IGNITE" schema to view cluster information (NODES, NODE_ATTRIBUTES, NODE_METRICS, BASELINE_NODES) * Added ability to create predefined SQL schemas * Added GROUP_CONCAT function support * Added string length constraint * Custom Java objects are now inlined into primary and secondary indexes what may significantly improve performance when AFFINITY_KEY is used * Added timeout to fail query execution in case it cannot be mapped to topology * Restricted number of cores allocated for CREATE INDEX by default to 4 to avoid contention on index tree Fixed transaction hanging during runtime error on commit. * Fixed possible memory leak when result set size is multiple of the page size * Fixed situation when data may be returned from cache partitions in LOST state even when PartitionLossPolicy doesn't permit it * Fixed "Caches have distinct sets of data nodes" during SQL JOIN query execution between REPLICATED and PARTITIONED caches * Fixed wrong result for SQL queries when item size exceeds the page size * Fixed error during SQL query from client node with the local flag set to "true" * Fixed handling UUID as a column type JDBC: * Implemented DataSource interface for the thin driver ODBC: * Added streaming mode support * Fixed crash in Linux when there are more than 1023 open file descriptors * Fixed bug that prevented cursors on a server from being closed * Fixed segmentation fault when reusing a closed connection Web Console: * Added new metrics: WAL and Data size on disk * Added support for "collocated" query mode on Query screen * Added support for Java 9+ for Web Agent. * Added ability to show/hide password field value * Implemented execution of selected part of SQL query * Implemented explain of the selected part of SQL query * Implemented connection to a secured cluster * Implemented responsive full-screen layout * Split "Sign In" page to three separate pages * UI updated to modern look and feel * Improved backend stability * Fixed fail when working with web sockets REST: * Added option IGNITE_REST_GETALL_AS_ARRAY for array format in "getAll" call Visor: * Added output of node "Consistent ID" * Visor now collects information about cache groups instead of separate caches to reduce memory consumption * Improved help for "start" command * Fixed output of cache metrics Control utility: * Added information about transaction start time * Added command to collect information about a distribution of partitions * Added command to reset lost partitions * Added support for empty label (control.sh --tx label null) * Added atomicity mode to utility output. * Added orphaned local and remote transactions and ability to rollback them * Added "--dump" flag to dump current partition state to file. * Renamed command argument '--force' to '--yes' * Removed "initOrder" and "loc keys" from an info * Fixed control utility hanging when connected to a joining node with PME ML: * Added TensorFlow integration * Added Estimator API support to TensorFlow cluster on top of Apache Ignite * Added ANN algorithm based on ACD concept * Added Random Forest algorithm * Added OneHotEncoder for categorical features * Added model estimation * Added K-fold cross-validation for ML models * Added splitter for splitting the dataset into test and train subsets * Added ability of filtering data during datasets creation * Added encoding categorical features with One-of-K Encoder * Added MinMax scaler preprocessor * Added gradient boosting for trees * Added indexing for decision trees * Added GDB convergence by error support * Added ability to build pipeline of data preprocessing and model training * Added ability to start and maintain TensorFlow cluster on top of Apache Ignite * Added support of Multi-Class for Logistic Regression * Implemented distributed binary logistic regression Dependency updates: * Apache Camel updated to 2.22.0 * Apache Commons Beanutils updated to 1.9.3 * Apache Hadoop Yarn updated to 2.7.7 * Apache Kafka updated to 1.1.0 * Apache Lucene updated to 7.4.0 * Apache Mesos updated to 1.5.0 * Apache Tomcat updated to 9.0.10 * Apache Zookeeper updated to 3.4.13 * Guava updated to 25.1-jre * Jackson Databind updated to 2.9.6 * Jackson 1 usages replaced with Jackson 2 * JCraft updated to 0.1.54 * H2 version updated to 1.4.197 * Log4j 2.x updated to 2.11.0 * Netty updated to 4.1.27.Final * RocketMQ updated to 4.3.0 * Scala 2.10.x was updated to 2.10.7 * Scala 2.11.x updated to 2.11.12 Complete list of closed issues: https://issues.apache.org/jira/browse/IGNITE-10432?jql=project%20%3D%20IGNITE%20AND%20fixVersion%20%3D%202.7%20AND%20(status%20%3D%20closed%20or%20status%20%3D%20resolved) DEVNOTES https://git-wip-us.apache.org/repos/asf?p=ignite.git;a=blob_plain;f=DEVNOTES.txt;hb=refs/tags/2.7.0-rc1 RELEASE NOTES https://git-wip-us.apache.org/repos/asf?p=ignite.git;a=blob_plain;f=RELEASE_NOTES.txt;hb=refs/tags/2.7.0-rc1 Please start voting. +1 - to accept Apache Ignite 2.5.0-RC1 0 - don't care either way -1 - DO NOT accept Apache Ignite 2.5.0-RC1 (explain why) This vote will go for 72 hours.
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