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/.dropmenu__panel--></div><!-- /.dropmeu--></div></header><div class="dropmenu__back"></div><header class="hdrfloat hdr__white jsHdrFloatBase"></header><div class="container blog"><section class="blog__header"><h1>Apache Ignite 2.10: Thin Client Expansion</h1><p>March 18, 2021 by <strong>Maxim Muzafarov: </strong><a href="http://www.facebook.com/sharer.php?u=https://ignite.apache.org/blog/undefined">Facebook</a><span>, </span><a href="http://twitter.com/home?status=Apache Ignite 2.10: Thin Client Expansion%20https://ignite.apache.org/blog/undefined">Twitter</a></p></section><div class="blog__content"><main class="blog_main"><section class="blog__posts"><article class="post"><div><p class="entryContent">As of March 15, 2021, <a href="https://ignite.apache.org/">Apache Ignite</a> 2.10 has been released. You can directly |
| check the full list of resolved <a href="https://s.apache.org/i3ny6">Important JIRA's</a> but here let’s briefly overview some valuable improvements.</p><h3 id="thin-clients">Thin Clients</h3>Thin clients now support several important features which, previously were available only on the thick clients. |
| Thin clients are always backward and forward compatible with the server nodes of the cluster, so the cluster upgrade |
| process will be more convenient if the lack of these features prevented you from doing that.<p>See the list of what is changed for thin clients below:</p><ul><li>Transactions</li><li>Service invocations</li><li>Continuous Queries</li><li>SQL API</li><li>Cluster API</li><li>Cache Async API</li><li>Kubernetes Discovery (<em>ThinClientKubernetesAddressFinder</em>)</li></ul>You may check the <a href="https://cwiki.apache.org/confluence/display/IGNITE/Thin+clients+features">List of Thin Client Features</a> that supported by platforms you are interested in or see the <a href="https://ptupitsyn.github.io/Whats-New-In-Ignite-Net-2.10/">What's new in Apache Ignite.NET 2.10</a>.<!-- end --><h3 id="cluster-monitoring">Cluster Monitoring</h3>Apache Ignite self-monitoring and cluster health check subsystems are also extended by additional SQL-views |
| and command line scripts.<h4 id="new-_control-script_-commands">New <em>control-script</em> Commands</h4><p>Query any of the available system views.</p><code> <pre>control.sh --system-view views</pre><pre>Command [SYSTEM-VIEW] started</pre><pre>--------------------------------------------------------------------------------</pre><pre>name schema description</pre><pre>SQL_QUERIES_HISTORY SYS SQL queries history.</pre><pre>INDEXES SYS SQL indexes</pre><pre>BASELINE_NODES SYS Baseline topology nodes</pre><pre>STRIPED_THREADPOOL_QUEUE SYS Striped thread pool task queue</pre><pre>SCAN_QUERIES SYS Scan queries</pre><pre>PARTITION_STATES SYS Distribution of cache group partitions across cluster nodes</pre><br/><pre>Command [SYSTEM-VIEW] finished with code: 0</pre><pre>--------------------------------------------------------------------------------</pre></code><p>Query any of the available system metrics.</p><code> <pre>[source, text]</pre><pre>control.sh --metric sysCurrentThreadCpuTime</pre><pre>Command [METRIC] started</pre><pre>--------------------------------------------------------------------------------</pre><pre>metric value</pre><pre>sys.CurrentThreadCpuTime 17270000</pre><pre>Command [METRIC] finished with code: 0</pre><pre>--------------------------------------------------------------------------------</pre></code><p><a href="https://ignite.apache.org/docs/latest/tools/control-script">Read More</a></p><h4 id="managing-ignite-system-properties">Managing Ignite System Properties</h4><p>In addition to basic cluster configuration settings, you can perform some low-level cluster configuration and tuning |
| via |
| Ignite system properties. Run the command below to see the list of all available system properties for |
| configuration:</p><code> <pre>$./ ignite.sh -systemProps</pre><br/><pre>--------------------------------------------------------------------------------</pre><pre>IGNITE_AFFINITY_HISTORY_SIZE - [Integer] Maximum size for affinity assignment history. Default is 25.</pre><pre>IGNITE_ALLOW_ATOMIC_OPS_IN_TX - [Boolean] Allows atomic operations inside transactions. Default is true.</pre><pre>IGNITE_ALLOW_START_CACHES_IN_PARALLEL - [Boolean] Allows to start multiple caches in parallel. Default is true.</pre></code><p><a href="https://ignite.apache.org/docs/latest/setup#setting-ignite-system-properties">Read more</a></p><h3 id="cluster-profiling">Cluster Profiling</h3>From now on, Apache Ignite is delivered with the cluster profiling tool. This tool collects and processes all cluster |
| internal information about Queries, Compute Tasks, Cache operations, Checkpoint and WAL statistics, and so on for |
| problem detection and cluster self-tuning purposes. Each cluster node collects performance statistics into a special |
| binary file that is placed under the <code>[IGINTE_WORK_DIR]/perf_stat/</code> directory with the template filename |
| as<code>node-[nodeId]-[index].prf</code>. |
| All these files are consumed by offline-tool that builds the report in a human-readable format.<p><a href="https://ignite.apache.org/docs/latest/monitoring-metrics/performance-statistics">Read More</a></p><p><img src="/img/blog/d445a88f-98d1-4a6e-b4d8-037e819ca91f.png" alt="transactions statistics" style="display:block;margin:auto;width:50%;"/></p><h3 id="transparent-data-encryption-cache-key-rotation">Transparent Data Encryption - Cache Key Rotation</h3>Payment card industry data security standard (PCI DSS) requires that key-management procedures include a predefined |
| crypto period for each key in use and define a process for key changes at the end of the defined crypto period. |
| An expired key should not be used to encrypt new data, but it can be used for archived data, such keys should be |
| strongly protected (section 3.5 - 3.6 of PCI DSS Requirements and Security Assessment Procedures).<p>Apache Ignite now supports full PCI DSS requirements:</p><ul><li><em>Transparent Data Encryption</em> available since the 2.7 release.</li><li><em>Master Key Rotation</em> procedure available since the 2.9 release.</li><li><em>Cache Key Rotation</em> procedure available since the 2.10 release.</li></ul>You may use the CLI tools that provide the ability to change the re-encryption rate as well as suspend and |
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