https://answers.axonivy.com/questions/3934/execution-of-recreate-index-elasticsearch-failed<p>Hi,</p> <p>Due I trigger recreate index by Admin UI, that let an error as below</p> <pre><code>13:20:07.134 ERROR [ch.ivyteam.ivy.job.internal] [ivy immediate job pool-thread-3] [] Execution of job BusinessDataSearchIndexRecreator failed java.lang.OutOfMemoryError: Requested array size exceeds VM limit at java.lang.StringCoding.encode(StringCoding.java:350) at java.lang.String.getBytes(String.java:941) at org.apache.http.entity.StringEntity.&lt;init&gt;(StringEntity.java:70) at org.apache.http.client.entity.EntityBuilder.build(EntityBuilder.java:314) at io.searchbox.client.http.JestHttpClient.constructHttpMethod(JestHttpClient.java:184) at io.searchbox.client.http.JestHttpClient.prepareRequest(JestHttpClient.java:115) at io.searchbox.client.http.JestHttpClient.execute(JestHttpClient.java:64) at io.searchbox.client.http.JestHttpClient.execute(JestHttpClient.java:60) at ch.ivyteam.ivy.business.data.store.search.internal.elasticsearch.JestOperation.tryToExecute(JestOperation.java:45) at ch.ivyteam.ivy.business.data.store.search.internal.elasticsearch.JestOperation.execute(JestOperation.java:36) at ch.ivyteam.ivy.business.data.store.search.internal.elasticsearch.JestIndexSynchronizer.execute(JestIndexSynchronizer.java:151) at ch.ivyteam.ivy.business.data.store.search.internal.elasticsearch.JestIndexSynchronizer.addDocuments(JestIndexSynchronizer.java:42) at ch.ivyteam.ivy.business.data.store.search.internal.ElasticBusinessDataSearchIndex.addAll(ElasticBusinessDataSearchIndex.java:20) at ch.ivyteam.ivy.business.data.store.search.internal.BusinessDataSearchIndexRecreator.updateIndex(BusinessDataSearchIndexRecreator.java:70) at ch.ivyteam.ivy.business.data.store.search.internal.BusinessDataSearchIndexRecreator.readDataAndUpdateIndex(BusinessDataSearchIndexRecreator.java:52) at ch.ivyteam.ivy.business.data.store.search.internal.BusinessDataSearchIndexRecreator.recreateIndex(BusinessDataSearchIndexRecreator.java:34) at ch.ivyteam.ivy.business.data.store.search.internal.BusinessDataSearchIndecesRecreator.recreateIndeces(BusinessDataSearchIndecesRecreator.java:80) at ch.ivyteam.ivy.business.data.store.search.internal.BusinessDataSearchIndecesRecreator.execute(BusinessDataSearchIndecesRecreator.java:50) at ch.ivyteam.ivy.job.internal.JobManager$1.call(JobManager.java:382) at ch.ivyteam.ivy.job.internal.JobManager$1.call(JobManager.java:1) at ch.ivyteam.util.callable.ExecutionContextContainer$ContainerExecutionContext.call(ExecutionContextContainer.java:92) at ch.ivyteam.ivy.security.internal.SecurityManager.executeInContext_aroundBody0(SecurityManager.java:1362) at ch.ivyteam.ivy.security.internal.SecurityManager.executeInContext_aroundBody1$advice(SecurityManager.java:41) at ch.ivyteam.ivy.security.internal.SecurityManager.executeInContext(SecurityManager.java:1) at ch.ivyteam.util.callable.ExecutionContextContainer$ContainerExecutionContext.call(ExecutionContextContainer.java:88) at ch.ivyteam.util.callable.ExecutionContextContainer.executeInContext(ExecutionContextContainer.java:27) at ch.ivyteam.ivy.job.internal.JobManager.execute(JobManager.java:376) at ch.ivyteam.ivy.job.internal.Job.run(Job.java:56) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) </code></pre> <p>We use an external elasticsearch and the jvm.options is:</p> <pre><code>-XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -server -Xss1m -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djna.nosys=true -Djdk.io.permissionsUseCanonicalPath=true -Dio.netty.noUnsafe=true -Dio.netty.noKeySetOptimization=true -Dio.netty.recycler.maxCapacityPerThread=0 -Dlog4j.shutdownHookEnabled=false -Dlog4j2.disable.jmx=true -Dlog4j.skipJansi=true -XX:+HeapDumpOnOutOfMemoryError -Xmx6144m -Xms6144m </code></pre> <p>Could anyone give us some hints?</p>enThu, 19 Sep 2019 12:08:02 -0400https://answers.axonivy.com/questions/3934/execution-of-recreate-index-elasticsearch-failed/4003<p>If you have parent-childs relation whereas the childs references back to parent, this could bloat the json object.</p> <p>We have improved our json serializer to prevent such big objects in 7.4. But be aware and keep your business data structure clear and simple. </p>Alex SuterThu, 19 Sep 2019 12:08:02 -0400https://answers.axonivy.com/questions/3934/execution-of-recreate-index-elasticsearch-failed/4003