Hi Dev Team, I am using infinispan 8.2.4 standalone hotrod server and i am facing "*java.lang.OutOfMemoryError: Java heap space*" issue when putting or retrieving the data into cache. In below two ways i have loaded the data into local cache. *Case 1* : *(Data Loading is taking more time, But there is no issue with **"**OutOfMemoryError: Java heap space**"**)* In this case I am storing the index into a different dedicated infinispan cache by using the below tag , * <property name="default.directory_provider">Infinispan</property>* I have observed that it is taking much time to load the data into cache , but in this case i am not facing *Java Out of memory heap space* issue during data putting or retrieving. *Below is local cache configuration,* <local-cache name="MERCHANT_STORE_DETAILS" start="EAGER"> <locking acquire-timeout="30000" concurrency-level="1000" striping="false"/> <transaction mode="NONE"/> <eviction strategy="NONE"/> <file-store path="/MRSD/data" purge="false" passivation="false" preload="true"/> <indexing index="LOCAL"> <property name="default.indexmanager"> *org.infinispan.query.indexmanager.InfinispanIndexManager*</property> <property name="default.directory_provider"> *Infinispan*</property> <property name="default.metadata_ cachename">MRSD-INDEX_META_DATA</property> <property name="default.data_cachename"> MRSD-INDEX_DATA</property> <property name="default.locking_ cachename">MRSD-INDEX_LOCKING</property> </indexing> </local-cache> <local-cache name="MRSD-INDEX_META_DATA" start="EAGER"> <indexing index="NONE"/> <file-store path="/MRSD/index/indexMetadata" shared="false" purge="false" passivation="false" preload="true" fetch-state="true" read-only="false"/> </local-cache> <local-cache name="MRSD-INDEX_DATA" start="EAGER"> <indexing index="NONE"/> <file-store path="MRSD/index/indexData" shared="false" purge="false" passivation="false" preload="true" fetch-state="true" read-only="false"/> </local-cache> <local-cache name="MRSD-INDEX_LOCKING" start="EAGER"> <indexing index="NONE"/> <file-store path="MRSD/index/indexLocking" shared="false" purge="false" passivation="false" preload="true" fetch-state="true" read-only="false"/> </local-cache> *Time Taken To Load Data: *3 Min 13 Sec *Number of Records :* 45024 *Case 2 *: *(Data Loading is very quick, But issue with **"**OutOfMemoryError: Java heap space**"**)* In this case I am storing the index into memory by using the below tag , *<property name="default.directory_provider">ram</property>* I have observed that, data has loaded into cache with in some seconds for same number of records that mentioned in *Case 1*, But in this case when i am trying the store the same number of records( *45024*) multiple times and retrieving the data in same duration , It is throwing *OutOfMemoryError: Java heap space *in *infinispan-server-8.2.4.Final/standalone/configuration/server.log.* *Below is local cache configuration, *<local-cache name="MERCHANT_STORE_DETAILS" start="EAGER"> <locking acquire-timeout="30000" concurrency-level="1000" striping="false"/> <transaction mode="NONE"/> <eviction strategy="NONE"/> <indexing index="LOCAL"> <property name="default.indexmanager"> near-real-time</property> <property name="default.directory_ provider">ram</property> </indexing> </local-cache> *Time Taken To Load Data: *32 Sec *Number of Records :* 45024 *Exception In Details *2017-01-09 06:38:31,777 ERROR [stderr] (HotRod-externalServerHandler-1-88) Exception in thread "HotRod-externalServerHandler-1-88" java.lang.OutOfMemoryError: Java heap space 2017-01-09 06:39:18,706 ERROR [org.hibernate.search.exception.impl.LogErrorHandler] (Lucene Merge Thread #7869 for index org.infinispan.query.remote. impl.indexing.ProtobufValueWrapper) HSEARCH000058: HSEARCH000118: Exception during index Merge operation: org.apache.lucene.index.MergePolicy$MergeException: java.lang.OutOfMemoryError: Java heap space at org.apache.lucene.index.ConcurrentMergeScheduler. handleMergeException(ConcurrentMergeScheduler.java:668) at org.hibernate.search.backend.impl.lucene.overrides. ConcurrentMergeScheduler.handleMergeException( ConcurrentMergeScheduler.java:42) at org.apache.lucene.index.ConcurrentMergeScheduler$ MergeThread.run(ConcurrentMergeScheduler.java:648) Caused by: java.lang.OutOfMemoryError: Java heap space 2017-01-09 06:41:23,919 ERROR [stderr] (HotRod-externalServerHandler-1-88) at org.antlr.runtime.Lexer.emit(Lexer.java:160) 2017-01-09 06:36:54,872 ERROR [org.jboss.as.controller.management-operation] (DeploymentScanner-threads - 2) WFLYCTL0013: Operation ("read-children-resources") failed - address: ([]): java.lang.OutOfMemoryError: Java heap space at java.util.HashMap.resize(HashMap.java:703) at java.util.HashMap.putVal(HashMap.java:628) at java.util.HashMap.put(HashMap.java:611) at org.jboss.as.controller.OperationContextImpl$ AuthorizationResponseImpl.addResourceResult(OperationContextImpl.java: 2356) at org.jboss.as.controller.OperationContextImpl$ AuthorizationResponseImpl.access$700(OperationContextImpl.java:2328) at org.jboss.as.controller.OperationContextImpl. getBasicAuthorizationResponse(OperationContextImpl.java:1764) at org.jboss.as.controller.OperationContextImpl.authorize( OperationContextImpl.java:1659) at org.jboss.as.controller.OperationContextImpl.authorize( OperationContextImpl.java:1618) at org.jboss.as.controller.OperationContextImpl. getResourceRegistration(OperationContextImpl.java:567) at org.jboss.as.controller.operations.global. ReadChildrenResourcesHandler.execute(ReadChildrenResourcesHandler.java:94) at org.jboss.as.controller.AbstractOperationContext.executeStep( AbstractOperationContext.java:890) at org.jboss.as.controller.AbstractOperationContext.processStages( AbstractOperationContext.java:659) at org.jboss.as.controller.AbstractOperationContext. executeOperation(AbstractOperationContext.java:370) at org.jboss.as.controller.OperationContextImpl.executeOperation( OperationContextImpl.java:1344) at org.jboss.as.controller.ModelControllerImpl.internalExecute( ModelControllerImpl.java:392) at org.jboss.as.controller.ModelControllerImpl.execute( ModelControllerImpl.java:204) at org.jboss.as.controller.ModelControllerImpl$3.execute( ModelControllerImpl.java:659) at org.jboss.as.controller.ModelControllerImpl$3.execute( ModelControllerImpl.java:649) at org.jboss.as.server.deployment.scanner. DefaultDeploymentOperations.getDeploymentsStatus( DefaultDeploymentOperations.java:76) at org.jboss.as.server.deployment.scanner. FileSystemDeploymentService$ScanContext.<init>( FileSystemDeploymentService.java:1614) at org.jboss.as.server.deployment.scanner. FileSystemDeploymentService$ScanContext.<init>( FileSystemDeploymentService.java:1563) at org.jboss.as.server.deployment.scanner. FileSystemDeploymentService.scan(FileSystemDeploymentService.java:568) at org.jboss.as.server.deployment.scanner. FileSystemDeploymentService.scan(FileSystemDeploymentService.java:489) at org.jboss.as.server.deployment.scanner. FileSystemDeploymentService$DeploymentScanRunnable.run( FileSystemDeploymentService.java:250) at java.util.concurrent.Executors$RunnableAdapter. call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset( FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) at org.jboss.threads.JBossThread.run(JBossThread.java:320) 2017-01-09 06:38:39,564 ERROR [org.infinispan.interceptors.InvocationContextInterceptor] (HotRod-externalServerHandler-1-107) ISPN000136: Error executing command PutKeyValueCommand, writing keys [[B0x4a1b313031323331..[29]]: java.lang.OutOfMemoryError: Java heap space at java.util.ResourceBundle.putBundleInCache( ResourceBundle.java:1694) at java.util.ResourceBundle.findBundle(ResourceBundle.java:1471) at java.util.ResourceBundle.findBundle(ResourceBundle.java:1419) at java.util.ResourceBundle.getBundleImpl(ResourceBundle. java:1361) at java.util.ResourceBundle.getBundle(ResourceBundle.java:890) at sun.util.resources.LocaleData$1.run(LocaleData.java:164) at sun.util.resources.LocaleData$1.run(LocaleData.java:160) at java.security.AccessController.doPrivileged(Native Method) at sun.util.resources.LocaleData.getBundle(LocaleData.java:160) at sun.util.resources.LocaleData.getNumberFormatData( LocaleData.java:156) at sun.util.locale.provider.LocaleResources.getNumberPatterns( LocaleResources.java:439) at sun.util.locale.provider.NumberFormatProviderImpl.getInstance( NumberFormatProviderImpl.java:177) at sun.util.locale.provider.NumberFormatProviderImpl. getNumberInstance(NumberFormatProviderImpl.java:149) at java.text.NumberFormat.getInstance(NumberFormat.java:875) at java.text.NumberFormat.getInstance(NumberFormat.java:861) at java.text.NumberFormat.getNumberInstance(NumberFormat.java:458) at org.infinispan.commons.util.Util.prettyPrintTime(Util.java:353) at org.infinispan.util.concurrent.locks.impl.DefaultLockManager$ KeyAwareExtendedLockPromise.lock(DefaultLockManager.java:238) at org.infinispan.interceptors.locking.AbstractLockingInterceptor. lockAndRecord(AbstractLockingInterceptor.java:193) at org.infinispan.interceptors.locking.AbstractLockingInterceptor. visitNonTxDataWriteCommand(AbstractLockingInterceptor.java:98) at org.infinispan.interceptors.locking. NonTransactionalLockingInterceptor.visitDataWriteCommand( NonTransactionalLockingInterceptor.java:41) at org.infinispan.interceptors.locking.AbstractLockingInterceptor. visitPutKeyValueCommand(AbstractLockingInterceptor.java:65) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor( PutKeyValueCommand.java:78) at org.infinispan.interceptors.base.CommandInterceptor. invokeNextInterceptor(CommandInterceptor.java:99) at org.infinispan.interceptors.CacheMgmtInterceptor. updateStoreStatistics(CacheMgmtInterceptor.java:191) at org.infinispan.interceptors.CacheMgmtInterceptor. visitPutKeyValueCommand(CacheMgmtInterceptor.java:177) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor( PutKeyValueCommand.java:78) at org.infinispan.interceptors.base.CommandInterceptor. invokeNextInterceptor(CommandInterceptor.java:99) at org.infinispan.interceptors.compat. BaseTypeConverterInterceptor.visitPutKeyValueCommand( BaseTypeConverterInterceptor.java:84) at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor( PutKeyValueCommand.java:78) at org.infinispan.interceptors.base.CommandInterceptor. invokeNextInterceptor(CommandInterceptor.java:99) at org.infinispan.interceptors.InvocationContextInterceptor. handleAll(InvocationContextInterceptor.java:114) Could any one please help me here to fix the "*OutOfMemoryError: Java heap space*" issue for *Case 2. *Please let me know if you need more information on this. Thanks in advance. -- *________________________________________________________________________________________________________________________________________________________________* *Thanks and Regards,* *Sridhar Jena,* Sr. Techincal Lead, Products * +91 - 20 - 27655062 <+91%2020%202765%205062>* | * +91 - 9226345267* | * sjena345* | *www.aurusinc.com* <http://www.aurusinc.com/> * Plot G-2, Sector 26, Pradhikaran, Pune, Maharashtra-411044* <http://www.aurusinc.com/> <https://www.facebook.com/pages/Aurus-Inc-Solution-and-Services-Provider/1... <https://twitter.com/aurustech> <http://linkedin.com/company/aurustech> <https://plus.google.com/100924847781939597025> *Please consider the environment before printing this e-mail * Disclaimers: This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. 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