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<a href="/docs/2.10.0/quick-start/dotnet"
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>.NET/C#</a>
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>C++</a>
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<a href="/docs/2.10.0/quick-start/nodejs"
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>Node.JS</a>
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<a href="/docs/2.10.0/quick-start/sql"
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>SQL</a>
</li>
<li>
<a href="/docs/2.10.0/quick-start/php"
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>PHP</a>
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<a href="/docs/2.10.0/quick-start/restapi"
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>Installing Using Docker</a>
</li>
<li>
<a href="/docs/2.10.0/installation/deb-rpm"
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>Installing DEB or RPM package</a>
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<li><a href="/docs/2.10.0/installation/kubernetes/amazon-eks-deployment" class=''>Amazon EKS</a></li>
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<li>
<a href="/docs/2.10.0/installation/vmware-installation"
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>Setting Up</a>
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<li>
<a href="/docs/2.10.0/logging"
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<li>
<a href="/docs/2.10.0/resources-injection"
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>Resources Injection</a>
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<li>
<a href="/docs/2.10.0/starting-nodes" class='' >Starting and Stopping Nodes</a>
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<button type='button' class='group-toggle collapsed '>Clustering<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
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<a href="/docs/2.10.0/clustering/clustering"
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<a href="/docs/2.10.0/clustering/tcp-ip-discovery"
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>TCP/IP Discovery</a>
</li>
<li>
<a href="/docs/2.10.0/clustering/zookeeper-discovery"
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>ZooKeeper Discovery</a>
</li>
<li>
<a href="/docs/2.10.0/clustering/discovery-in-the-cloud"
class=''
>Discovery in the Cloud</a>
</li>
<li>
<a href="/docs/2.10.0/clustering/network-configuration"
class=''
>Network Configuration</a>
</li>
<li>
<a href="/docs/2.10.0/clustering/connect-client-nodes"
class=''
>Connecting Client Nodes</a>
</li>
<li>
<a href="/docs/2.10.0/clustering/baseline-topology"
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>Baseline Topology</a>
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<li>
<a href="/docs/2.10.0/clustering/running-client-nodes-behind-nat"
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>Running Client Nodes Behind NAT</a>
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<button type='button' class='group-toggle collapsed '>Thin Clients<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
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<a href="/docs/2.10.0/thin-clients/getting-started-with-thin-clients"
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<li>
<a href="/docs/2.10.0/thin-clients/java-thin-client"
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>Java Thin Client</a>
</li>
<li>
<a href="/docs/2.10.0/thin-clients/dotnet-thin-client"
class=''
>.NET Thin Client</a>
</li>
<li>
<a href="/docs/2.10.0/thin-clients/cpp-thin-client"
class=''
>C++ Thin Client</a>
</li>
<li>
<a href="/docs/2.10.0/thin-clients/python-thin-client"
class=''
>Python Thin Client</a>
</li>
<li>
<a href="/docs/2.10.0/thin-clients/php-thin-client"
class=''
>PHP Thin Client</a>
</li>
<li>
<a href="/docs/2.10.0/thin-clients/nodejs-thin-client"
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>Node.js Thin Client</a>
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<button
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<li><a href="/docs/2.10.0/binary-client-protocol/binary-client-protocol" class=''>Binary Client Protocol</a></li>
<li><a href="/docs/2.10.0/binary-client-protocol/data-format" class=''>Data Format</a></li>
<li><a href="/docs/2.10.0/binary-client-protocol/key-value-queries" class=''>Key-Value Queries</a></li>
<li><a href="/docs/2.10.0/binary-client-protocol/sql-and-scan-queries" class=''>SQL and Scan Queries</a></li>
<li><a href="/docs/2.10.0/binary-client-protocol/binary-type-metadata" class=''>Binary Types Metadata</a></li>
<li><a href="/docs/2.10.0/binary-client-protocol/cache-configuration" class=''>Cache Configuration</a></li>
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</nav>
</li>
<li>
<button type='button' class='group-toggle collapsed '>Data Modeling<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
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<li>
<a href="/docs/2.10.0/data-modeling/data-modeling"
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>Introduction</a>
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<li>
<a href="/docs/2.10.0/data-modeling/data-partitioning"
class=''
>Data Partitioning</a>
</li>
<li>
<a href="/docs/2.10.0/data-modeling/affinity-collocation"
class=''
>Affinity Colocation</a>
</li>
<li>
<a href="/docs/2.10.0/data-modeling/binary-marshaller"
class=''
>Binary Marshaller</a>
</li>
</nav>
</li>
<li>
<button type='button' class='group-toggle collapsed '>Configuring Memory<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class='nav-group collapsed'>
<li>
<a href="/docs/2.10.0/memory-architecture"
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>Memory Architecture</a>
</li>
<li>
<a href="/docs/2.10.0/memory-configuration/data-regions"
class=''
>Configuring Data Regions</a>
</li>
<li>
<a href="/docs/2.10.0/memory-configuration/eviction-policies"
class=''
>Eviction Policies</a>
</li>
<li>
<a href="/docs/2.10.0/memory-configuration/replacement-policies"
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>Replacement Policies</a>
</li>
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</li>
<li>
<button type='button' class='group-toggle collapsed '>Configuring Persistence<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class='nav-group collapsed'>
<li>
<a href="/docs/2.10.0/persistence/native-persistence"
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>Ignite Persistence</a>
</li>
<li>
<a href="/docs/2.10.0/persistence/external-storage"
class=''
>External Storage</a>
</li>
<li>
<a href="/docs/2.10.0/persistence/swap"
class=''
>Swapping</a>
</li>
<li>
<a href="/docs/2.10.0/persistence/custom-cache-store"
class=''
>Implementing Custom Cache Store</a>
</li>
<li>
<a href="/docs/2.10.0/persistence/snapshot-directory"
class=''
>Configuring Snapshot Directory</a>
</li>
<li>
<a href="/docs/2.10.0/persistence/disk-compression"
class=''
>Disk Compression</a>
</li>
<li>
<a href="/docs/2.10.0/persistence/persistence-tuning"
class=''
>Tuning Persistence</a>
</li>
</nav>
</li>
<li>
<a href="/docs/2.10.0/snapshots/snapshots" class='' >Cluster Snapshots</a>
</li>
<li>
<button type='button' class='group-toggle collapsed '>Configuring Caches<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class='nav-group collapsed'>
<li>
<a href="/docs/2.10.0/configuring-caches/configuration-overview"
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>Cache Configuration</a>
</li>
<li>
<a href="/docs/2.10.0/configuring-caches/configuring-backups"
class=''
>Configuring Partition Backups</a>
</li>
<li>
<a href="/docs/2.10.0/configuring-caches/partition-loss-policy"
class=''
>Partition Loss Policy</a>
</li>
<li>
<a href="/docs/2.10.0/configuring-caches/atomicity-modes"
class=''
>Atomicity Modes</a>
</li>
<li>
<a href="/docs/2.10.0/configuring-caches/expiry-policies"
class=''
>Expiry Policy</a>
</li>
<li>
<a href="/docs/2.10.0/configuring-caches/on-heap-caching"
class=''
>On-Heap Caching</a>
</li>
<li>
<a href="/docs/2.10.0/configuring-caches/cache-groups"
class=''
>Cache Groups</a>
</li>
<li>
<a href="/docs/2.10.0/configuring-caches/near-cache"
class=''
>Near Caches</a>
</li>
</nav>
</li>
<li>
<a href="/docs/2.10.0/data-rebalancing" class='' >Data Rebalancing</a>
</li>
<li>
<a href="/docs/2.10.0/data-streaming" class='' >Data Streaming</a>
</li>
<li>
<button type='button' class='group-toggle collapsed '>Using Key-Value API<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class='nav-group collapsed'>
<li>
<a href="/docs/2.10.0/key-value-api/basic-cache-operations"
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>Basic Cache Operations</a>
</li>
<li>
<a href="/docs/2.10.0/key-value-api/binary-objects"
class=''
>Working with Binary Objects</a>
</li>
<li>
<a href="/docs/2.10.0/key-value-api/using-cache-queries"
class=''
>Using Cache Queries</a>
</li>
<li>
<a href="/docs/2.10.0/read-repair"
class=''
>Read Repair</a>
</li>
</nav>
</li>
<li>
<a href="/docs/2.10.0/key-value-api/transactions" class='' >Performing Transactions</a>
</li>
<li>
<button type='button' class='group-toggle collapsed '>Working with SQL<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class='nav-group collapsed'>
<li>
<a href="/docs/2.10.0/SQL/sql-introduction"
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>Introduction</a>
</li>
<li>
<a href="/docs/2.10.0/SQL/schemas"
class=''
>Understanding Schemas</a>
</li>
<li>
<a href="/docs/2.10.0/SQL/indexes"
class=''
>Defining Indexes</a>
</li>
<li>
<a href="/docs/2.10.0/SQL/sql-api"
class=''
>Using SQL API</a>
</li>
<li>
<a href="/docs/2.10.0/SQL/distributed-joins"
class=''
>Distributed Joins</a>
</li>
<li>
<a href="/docs/2.10.0/SQL/custom-sql-func"
class=''
>Custom SQL Functions</a>
</li>
<li>
<a href="/docs/2.10.0/SQL/JDBC/jdbc-driver"
class=''
>JDBC Driver</a>
</li>
<li>
<a href="/docs/2.10.0/SQL/JDBC/jdbc-client-driver"
class=''
>JDBC Client Driver</a>
</li>
<li>
<button
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<li><a href="/docs/2.10.0/SQL/ODBC/odbc-driver" class=''>ODBC Driver</a></li>
<li><a href="/docs/2.10.0//SQL/ODBC/connection-string-dsn" class=''>Connection String and DSN</a></li>
<li><a href="/docs/2.10.0/SQL/ODBC/querying-modifying-data" class=''>Querying and Modifying Data</a></li>
<li><a href="/docs/2.10.0/SQL/ODBC/specification" class=''>Specification</a></li>
<li><a href="/docs/2.10.0/SQL/ODBC/data-types" class=''>Data Types</a></li>
<li><a href="/docs/2.10.0/SQL/ODBC/error-codes" class=''>Error Codes</a></li>
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</li>
<li>
<a href="/docs/2.10.0/transactions/mvcc"
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<li>
<a href="/docs/2.10.0/SQL/sql-statistics"
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<button type='button' class='group-toggle collapsed '>SQL Reference<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
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<a href="/docs/2.10.0/sql-reference/sql-conformance"
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<li>
<a href="/docs/2.10.0/sql-reference/ddl"
class=''
>Data Definition Language (DDL)</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/dml"
class=''
>Data Manipulation Language (DML)</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/transactions"
class=''
>Transactions</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/operational-commands"
class=''
>Operational Commands</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/aggregate-functions"
class=''
>Aggregate functions</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/numeric-functions"
class=''
>Numeric Functions</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/string-functions"
class=''
>String Functions</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/date-time-functions"
class=''
>Data and Time Functions</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/system-functions"
class=''
>System Functions</a>
</li>
<li>
<a href="/docs/2.10.0/sql-reference/data-types"
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>Data Types</a>
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<li>
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<li>
<a href="/docs/2.10.0/distributed-computing/distributed-computing"
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>Distributed Computing API</a>
</li>
<li>
<a href="/docs/2.10.0/distributed-computing/cluster-groups"
class=''
>Cluster Groups</a>
</li>
<li>
<a href="/docs/2.10.0/distributed-computing/executor-service"
class=''
>Executor Service</a>
</li>
<li>
<a href="/docs/2.10.0/distributed-computing/map-reduce"
class=''
>MapReduce API</a>
</li>
<li>
<a href="/docs/2.10.0/distributed-computing/load-balancing"
class=''
>Load Balancing</a>
</li>
<li>
<a href="/docs/2.10.0/distributed-computing/fault-tolerance"
class=''
>Fault Tolerance</a>
</li>
<li>
<a href="/docs/2.10.0/distributed-computing/job-scheduling"
class=''
>Job Scheduling</a>
</li>
<li>
<a href="/docs/2.10.0/distributed-computing/collocated-computations"
class=''
>Colocating Computations with Data</a>
</li>
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</li>
<li>
<button type='button' class='group-toggle collapsed '>Code Deployment<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
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<li>
<a href="/docs/2.10.0/code-deployment/deploying-user-code"
class=''
>Deploying User Code</a>
</li>
<li>
<a href="/docs/2.10.0/code-deployment/peer-class-loading"
class=''
>Peer Class Loading</a>
</li>
</nav>
</li>
<li>
<button type='button' class='group-toggle collapsed '>Machine Learning<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
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<li>
<a href="/docs/2.10.0/machine-learning/machine-learning"
class=''
>Machine Learning</a>
</li>
<li>
<a href="/docs/2.10.0/machine-learning/partition-based-dataset"
class=''
>Partition Based Dataset</a>
</li>
<li>
<a href="/docs/2.10.0/machine-learning/updating-trained-models"
class=''
>Updating Trained Models</a>
</li>
<li>
<button
type='button'
class='collapsed '>Binary Classification<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class="sub_pages collapsed">
<li><a href="/docs/2.10.0/machine-learning/binary-classification/introduction" class=''>Introduction</a></li>
<li><a href="/docs/2.10.0/machine-learning/binary-classification/linear-svm" class=''>Linear SVM (Support Vector Machine)</a></li>
<li><a href="/docs/2.10.0/machine-learning/binary-classification/decision-trees" class=''>Decision Trees</a></li>
<li><a href="/docs/2.10.0/machine-learning/binary-classification/multilayer-perceptron" class=''>Multilayer Perceptron</a></li>
<li><a href="/docs/2.10.0/machine-learning/binary-classification/logistic-regression" class=''>Logistic Regression</a></li>
<li><a href="/docs/2.10.0/machine-learning/binary-classification/knn-classification" class=''>k-NN Classification</a></li>
<li><a href="/docs/2.10.0/machine-learning/binary-classification/ann" class=''>ANN (Approximate Nearest Neighbor)</a></li>
<li><a href="/docs/2.10.0/machine-learning/binary-classification/naive-bayes" class=''>Naive Bayes</a></li>
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</li>
<li>
<button
type='button'
class='collapsed '>Regression<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class="sub_pages collapsed">
<li><a href="/docs/2.10.0/machine-learning/regression/introduction" class=''>Introduction</a></li>
<li><a href="/docs/2.10.0/machine-learning/regression/linear-regression" class=''>Linear Regression</a></li>
<li><a href="/docs/2.10.0/machine-learning/regression/decision-trees-regression" class=''>Decision Trees Regression</a></li>
<li><a href="/docs/2.10.0/machine-learning/regression/knn-regression" class=''>k-NN Regression</a></li>
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</li>
<li>
<button
type='button'
class='collapsed '>Clustering<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class="sub_pages collapsed">
<li><a href="/docs/2.10.0/machine-learning/clustering/introduction" class=''>Introduction</a></li>
<li><a href="/docs/2.10.0/machine-learning/clustering/k-means-clustering" class=''>K-Means Clustering</a></li>
<li><a href="/docs/2.10.0/machine-learning/clustering/gaussian-mixture" class=''>Gaussian mixture (GMM)</a></li>
</nav>
</li>
<li>
<a href="/docs/2.10.0/machine-learning/preprocessing"
class=''
>Preprocessing</a>
</li>
<li>
<button
type='button'
class='collapsed '>Model Selection<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class="sub_pages collapsed">
<li><a href="/docs/2.10.0/machine-learning/model-selection/introduction" class=''>Introduction</a></li>
<li><a href="/docs/2.10.0/machine-learning/model-selection/evaluator" class=''>Evaluator</a></li>
<li><a href="/docs/2.10.0/machine-learning/model-selection/split-the-dataset-on-test-and-train-datasets" class=''>Split the dataset on test and train datasets</a></li>
<li><a href="/docs/2.10.0/machine-learning/model-selection/hyper-parameter-tuning" class=''>Hyper-parameter tuning</a></li>
<li><a href="/docs/2.10.0/machine-learning/model-selection/pipeline-api" class=''>Pipeline API</a></li>
</nav>
</li>
<li>
<a href="/docs/2.10.0/machine-learning/multiclass-classification"
class=''
>Multiclass Classification</a>
</li>
<li>
<button
type='button'
class='collapsed '>Ensemble Methods<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class="sub_pages collapsed">
<li><a href="/docs/2.10.0/machine-learning/ensemble-methods/introduction" class=''></a></li>
<li><a href="/docs/2.10.0/machine-learning/ensemble-methods/stacking" class=''>Stacking</a></li>
<li><a href="/docs/2.10.0/machine-learning/ensemble-methods/baggin" class=''>Bagging</a></li>
<li><a href="/docs/2.10.0/machine-learning/ensemble-methods/random-forest" class=''>Random Forest</a></li>
<li><a href="/docs/2.10.0/machine-learning/ensemble-methods/gradient-boosting" class=''>Gradient Boosting</a></li>
</nav>
</li>
<li>
<a href="/docs/2.10.0/machine-learning/recommendation-systems"
class=''
>Recommendation Systems</a>
</li>
<li>
<button
type='button'
class='collapsed '>Importing Model<img class="state-indicator" src="/assets/images/left-nav-arrow.svg" width="6" height="10"></button>
<nav class="sub_pages collapsed">
<li><a href="/docs/2.10.0/machine-learning/importing-model/introduction" class=''>Introduction</a></li>
<li><a href="/docs/2.10.0/machine-learning/importing-model/model-import-from-gxboost" class=''>Import Model from XGBoost</a></li>
<li><a href="/docs/2.10.0/machine-learning/importing-model/model-import-from-apache-spark" class=''>Import Model from Apache Spark</a></li>
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<li>
<a href="/docs/2.10.0/key-value-api/continuous-queries" class='' >Using Continuous Queries</a>
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<li>
<a href="/docs/2.10.0/services/services" class='' >Using Ignite Services</a>
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<li>
<a href="/docs/2.10.0/messaging" class='' >Using Ignite Messaging</a>
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<a href="/docs/2.10.0/tools/tableau"
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<article data-swiftype-index='true'>
<a class='edit-link' href="https://github.com/apache/ignite/tree/IGNITE-7595/docs/_docs/net-specific/net-troubleshooting.adoc" target="_blank">Edit</a>
<h1>Ignite.NET Troubleshooting</h1>
<div class="sect1">
<h2 id="overview">Overview</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This page covers several troubleshooting techniques and commonly-known issues you can come across while building and
using your Ignite.NET applications in production.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="troubleshooting-with-console">Troubleshooting With Console</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Ignite produces console output (stdout): information, metrics, warnings, error details. If your app does not open console, you may redirect the console output to a string or a file:</p>
</div>
<code-tabs><code-tab data-tab='C#'><div class="listingblock">
<div class="content">
<pre class="rouge highlight"><code data-lang="csharp"><span class="kt">var</span> <span class="n">sw</span> <span class="p">=</span> <span class="k">new</span> <span class="nf">StringWriter</span><span class="p">();</span>
<span class="n">Console</span><span class="p">.</span><span class="nf">SetOut</span><span class="p">(</span><span class="n">sw</span><span class="p">);</span>
<span class="c1">// Examine output:</span>
<span class="n">sw</span><span class="p">.</span><span class="nf">ToString</span><span class="p">();</span></code></pre>
</div>
</div></code-tab></code-tabs>
</div>
</div>
<div class="sect1">
<h2 id="getting-more-insights-on-exceptions">Getting More Insights On Exceptions</h2>
<div class="sectionbody">
<div class="paragraph">
<p>When you are getting an <code>IgniteException</code>, always make sure to examine the <code>InnerException</code> property that often contains
more details on the root cause of the issue. You can do that in Visual Studio debugger or by calling <code>ToString()</code> on the exception object:</p>
</div>
<div class="imageblock">
<div class="content">
<img src="/docs/2.10.0/images/net-view-details.png" alt="Visual Studio Debugger">
</div>
</div>
<code-tabs><code-tab data-tab='C#'><div class="listingblock">
<div class="content">
<pre class="rouge highlight"><code data-lang="csharp"><span class="k">try</span> <span class="p">{</span>
<span class="n">IQueryCursor</span><span class="p">&lt;</span><span class="n">List</span><span class="p">&gt;</span> <span class="n">cursor</span> <span class="p">=</span> <span class="n">cache</span><span class="p">.</span><span class="nf">QueryFields</span><span class="p">(</span><span class="n">query</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">catch</span> <span class="p">(</span><span class="n">IgniteException</span> <span class="n">e</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// Printing out the whole exception meesage.</span>
<span class="n">Console</span><span class="p">.</span><span class="nf">WriteLine</span><span class="p">(</span><span class="n">e</span><span class="p">.</span><span class="nf">ToString</span><span class="p">());</span>
<span class="p">}</span></code></pre>
</div>
</div></code-tab></code-tabs>
</div>
</div>
<div class="sect1">
<h2 id="commonly-known-issues">Commonly-Known Issues</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The following section covers several issues you can come across while designing your Ignite.NET applications.</p>
</div>
<div class="sect2">
<h3 id="failed-to-load-jvm-dll">Failed to load jvm.dll</h3>
<div class="paragraph">
<p>Make sure that Java Development Kit is installed, and the <code>JAVA_HOME</code> variable is set and points to a JDK installation directory.</p>
</div>
<div class="paragraph">
<p>The <code>errorCode=193</code> code is <code>ERROR_BAD_EXE_FORMAT</code>, which is often caused by x64/x86 mismatch. Make sure that the installed
JDK and your application have the same x64/x86 platform target. Ignite detects proper JDK automatically when <code>JAVA_HOME</code> is not set,
so if you have x86 AND x64 JDK installed, it will work in any mode.</p>
</div>
<div class="paragraph">
<p>The <code>126 ERROR_MOD_NOT_FOUND</code> code can occur due to missing dependencies:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>JDK 8 requires <a href="https://www.microsoft.com/en-us/download/details.aspx?id=14632" target="_blank" rel="noopener">Microsoft Visual C&#43;&#43; 2010 Redistributable Package</a></p>
</li>
<li>
<p>Later JDK versions require <a href="https://www.microsoft.com/en-us/download/details.aspx?id=48145" target="_blank" rel="noopener">Microsoft Visual C&#43;&#43; 2015 Redistributable Package</a> or later</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="java-class-is-not-found">Java class is not found</h3>
<div class="paragraph">
<p>Check your the <code>IGNITE_HOME</code> environment variable, <code>IgniteConfiguration.IgniteHome</code> and <code>IgniteConfiguration.JvmClasspath</code> properties.
Refer to <a href="/docs/2.10.0/net-specific/deployment-options">Deployment</a> section for more details. ASP.NET/IIS scenarios require additional steps.</p>
</div>
</div>
<div class="sect2">
<h3 id="freeze-on-ignition-start">Freeze on Ignition.Start</h3>
<div class="paragraph">
<p>Examine console output. Most often this is caused by a topology join failure:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Ignite <code>DiscoverySpi</code> settings are incorrect</p>
</li>
<li>
<p><code>ClientMode</code> is true, but there are no servers nodes that form the cluster.</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="failed-to-start-manager-gridmanageradapter">Failed to start manager : GridManagerAdapter</h3>
<div class="paragraph">
<p>Examine console output. Most often this is caused by an invalid or incompatible configuration:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Some configuration property has an invalid value (out of range and the like).</p>
</li>
<li>
<p>Some configuration property is incompatible with a value in other cluster nodes. In particular, <code>BinaryConfiguration</code> properties,
such as <code>CompactFooter</code>, <code>IdMapper</code>, and <code>NameMapper</code> should be the same on all nodes.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>The latter problem often arises when building a mixed cluster (Java + .NET nodes), because default configuration on these
platforms is different. .NET only supports <code>BinaryBasicIdMapper</code> and <code>BinaryBasicNameMapper</code>. Java configuration has to
be fixed the following way to enable .NET nodes connectivity:</p>
</div>
<code-tabs><code-tab data-tab='XML'><div class="listingblock">
<div class="content">
<pre class="rouge highlight"><code data-lang="xml"><span class="nt">&lt;property</span> <span class="na">name=</span><span class="s">"binaryConfiguration"</span><span class="nt">&gt;</span>
<span class="nt">&lt;bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.configuration.BinaryConfiguration"</span><span class="nt">&gt;</span>
<span class="nt">&lt;property</span> <span class="na">name=</span><span class="s">"compactFooter"</span> <span class="na">value=</span><span class="s">"true"</span><span class="nt">/&gt;</span>
<span class="nt">&lt;property</span> <span class="na">name=</span><span class="s">"idMapper"</span><span class="nt">&gt;</span>
<span class="nt">&lt;bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.binary.BinaryBasicIdMapper"</span><span class="nt">&gt;</span>
<span class="nt">&lt;constructor-arg</span> <span class="na">value=</span><span class="s">"true"</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/bean&gt;</span>
<span class="nt">&lt;/property&gt;</span>
<span class="nt">&lt;property</span> <span class="na">name=</span><span class="s">"nameMapper"</span><span class="nt">&gt;</span>
<span class="nt">&lt;bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.binary.BinaryBasicNameMapper"</span><span class="nt">&gt;</span>
<span class="nt">&lt;constructor-arg</span> <span class="na">value=</span><span class="s">"true"</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/bean&gt;</span>
<span class="nt">&lt;/property&gt;</span>
<span class="nt">&lt;/bean&gt;</span>
<span class="nt">&lt;/property&gt;</span></code></pre>
</div>
</div></code-tab></code-tabs>
</div>
<div class="sect2">
<h3 id="could-not-load-file-or-assembly-myassembly-or-one-of-its-dependencies-the-system-cannot-find-the-file-specified">Could not load file or assembly 'MyAssembly' or one of its dependencies. The system cannot find the file specified.</h3>
<div class="paragraph">
<p>This exception can occur due to missing assemblies on remote nodes.
See <a href="/docs/2.10.0/net-specific/standalone-nodes#load-user-assemblies">Standalone Nodes: Loading User Assemblies</a> for details.</p>
</div>
</div>
<div class="sect2">
<h3 id="stack-smashing-detected-dotnet-terminated">Stack smashing detected: dotnet terminated</h3>
<div class="paragraph">
<p>This happens on Linux with .NET Core when <code>NullReferenceException</code> occurs in user code. The reason is that both .NET and
Java use <code>SIGSEGV</code> to handle certain exceptions, including <code>NullPointerException</code> and <code>NullReferenceException</code>, and when
JVM runs in the same process as .NET, it overrides that handler, breaking .NET exception handling
(see <a href="https://github.com/dotnet/coreclr/issues/25945" target="_blank" rel="noopener">1</a>, <a href="https://github.com/dotnet/coreclr/issues/25166" target="_blank" rel="noopener">2</a>).</p>
</div>
<div class="paragraph">
<p>The fix for this issue exists in .NET Core 3.0 (<a href="https://github.com/dotnet/coreclr/pull/25972" target="_blank" rel="noopener">#25972</a>.
by setting the <code>COMPlus_EnableAlternateStackCheck</code> environment variable to <code>1</code>.</p>
</div>
</div>
<div class="sect2">
<h3 id="zombie-processes-on-linux">Zombie processes on Linux</h3>
<div class="paragraph">
<p>On Linux, both .NET and Java install <code>SIGCHLD</code> handler to deal with child process termination.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Handlers are installed lazily (when a <code>Process</code> is first started)</p>
</li>
<li>
<p>Only one handler can exist at a time</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>Therefore, it is possible that Java overwrites .NET handler, or vice versa,
making it impossible to clean up child processes on one of the platforms,
resulting in <a href="https://en.wikipedia.org/wiki/Parent_process">zombie processes</a>.</p>
</div>
<div class="paragraph">
<p><strong>Ignite uses child processes on Java side in one particular case: when Persistence is enabled and <code>direct-io</code> module is used.</strong>
In this case .NET <code>System.Diagnostics.Process</code> API should not be used.</p>
</div>
<div class="sect3">
<h4 id="workaround">Workaround</h4>
<div class="paragraph">
<p>To work around the issue, make sure that child processes are created either only on Java side, or only on .NET side.</p>
</div>
<div class="paragraph">
<p>For example, when <code>direct-io</code> is used, and .NET code requires starting a child process,
move the process handling logic to Java side and invoke it with
<a href="/docs/2.10.0/developers-guide/distributed-computing/distributed-computing">Compute</a> <code>ExecuteJavaTask</code> API.
Alternatively, use Services API to call Java service from .NET.</p>
</div>
</div>
</div>
<div class="sect2">
<h3 id="dllnotfoundexception-unable-to-load-shared-library-libcoreclr-so-or-one-of-its-dependencies"><a id="libcoreclr-not-found"></a> DllNotFoundException: Unable to load shared library 'libcoreclr.so' or one of its dependencies</h3>
<div class="paragraph">
<p>Occurs on .NET 5 in a single-file publish mode (e.g. <code>dotnet publish --self-contained true -r linux-x64 -p:PublishSingleFile=true</code>).</p>
</div>
<div class="sect3">
<h4 id="workaround-2">Workaround</h4>
<div class="paragraph">
<p>Add the following code before starting the Ignite node:</p>
</div>
<code-tabs><code-tab data-tab='C#'><div class="listingblock">
<div class="content">
<pre class="rouge highlight"><code data-lang="csharp"><span class="n">NativeLibrary</span><span class="p">.</span><span class="nf">SetDllImportResolver</span><span class="p">(</span>
<span class="k">typeof</span><span class="p">(</span><span class="n">Ignition</span><span class="p">).</span><span class="n">Assembly</span><span class="p">,</span>
<span class="p">(</span><span class="n">lib</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">_</span><span class="p">)</span> <span class="p">=&gt;</span> <span class="n">lib</span> <span class="p">==</span> <span class="s">"libcoreclr.so"</span> <span class="p">?</span> <span class="p">(</span><span class="n">IntPtr</span><span class="p">)</span> <span class="p">(-</span><span class="m">1</span><span class="p">)</span> <span class="p">:</span> <span class="n">IntPtr</span><span class="p">.</span><span class="n">Zero</span><span class="p">);</span></code></pre>
</div>
</div></code-tab></code-tabs>
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</div>
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© 2021 The Apache Software Foundation.<br/>
Apache, Apache Ignite, the Apache feather and the Apache Ignite logo are either registered trademarks or trademarks of The Apache Software Foundation.
</div>
</article>
<nav class="right-nav" data-swiftype-index='false'>
<div class="toc-wrapper">
<ul class="sectlevel1">
<li><a href="#overview">Overview</a></li>
<li><a href="#troubleshooting-with-console">Troubleshooting With Console</a></li>
<li><a href="#getting-more-insights-on-exceptions">Getting More Insights On Exceptions</a></li>
<li><a href="#commonly-known-issues">Commonly-Known Issues</a>
<ul class="sectlevel2">
<li><a href="#failed-to-load-jvm-dll">Failed to load jvm.dll</a></li>
<li><a href="#java-class-is-not-found">Java class is not found</a></li>
<li><a href="#freeze-on-ignition-start">Freeze on Ignition.Start</a></li>
<li><a href="#failed-to-start-manager-gridmanageradapter">Failed to start manager : GridManagerAdapter</a></li>
<li><a href="#could-not-load-file-or-assembly-myassembly-or-one-of-its-dependencies-the-system-cannot-find-the-file-specified">Could not load file or assembly 'MyAssembly' or one of its dependencies. The system cannot find the file specified.</a></li>
<li><a href="#stack-smashing-detected-dotnet-terminated">Stack smashing detected: dotnet terminated</a></li>
<li><a href="#zombie-processes-on-linux">Zombie processes on Linux</a>
<ul class="sectlevel3">
<li><a href="#workaround">Workaround</a></li>
</ul>
</li>
<li><a href="#dllnotfoundexception-unable-to-load-shared-library-libcoreclr-so-or-one-of-its-dependencies"> DllNotFoundException: Unable to load shared library 'libcoreclr.so' or one of its dependencies</a>
<ul class="sectlevel3">
<li><a href="#workaround-2">Workaround</a></li>
</ul>
</li>
</ul>
</li>
</ul>
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