In the Sonar.log I get this:
2016.10.19 18:45:00 INFO ce[AVfd0-qcobGjwNjBKtkg][o.s.s.c.t.CeWorkerCallableImpl] Execute task | project=MyProject | type=REPORT | id=AVfd0-qcobGjwNjBKtkg
2016.10.19 19:01:04 WARN ce[][o.e.transport] [Spymaster] Received response for a request that has timed out, sent [51622ms] ago, timed out [44462ms] ago, action [cluster:monitor/nodes/liveness], node [{#transport#-1}{127.0.0.1}{127.0.0.1:9001}], id [8980]
2016.10.19 19:01:21 INFO ce[][o.e.client.transport] [Spymaster] failed to get node info for {#transport#-1}{127.0.0.1}{
127.0.0.1:9001}, disconnecting...
org.elasticsearch.transport.ReceiveTimeoutTransportException: [][127.0.0.1:9001][cluster:monitor/nodes/liveness] request_id [8980] timed out after [7160ms]
at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:679) ~[elasticsearch-2.3.3.jar:2.3.3]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_91]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_91]
2016.10.19 19:12:10 INFO ce[][o.e.client.transport] [Spymaster] failed to get node info for {#transport#-1}{127.0.0.1}{
127.0.0.1:9001}, disconnecting...
org.elasticsearch.transport.ReceiveTimeoutTransportException: [][127.0.0.1:9001][cluster:monitor/nodes/liveness] request_id [9056] timed out after [5117ms]
at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:679) ~[elasticsearch-2.3.3.jar:2.3.3]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_91]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_91]
2016.10.19 19:15:39 WARN ce[][o.e.transport] [Spymaster] Received response for a request that has timed out, sent [32979ms] ago, timed out [27862ms] ago, action [cluster:monitor/nodes/liveness], node [{#transport#-1}{127.0.0.1}{127.0.0.1:9001}], id [9056]
2016.10.19 19:20:48 INFO ce[][o.e.client.transport] [Spymaster] failed to get node info for {#transport#-1}{127.0.0.1}{
127.0.0.1:9001}, disconnecting...
org.elasticsearch.transport.ReceiveTimeoutTransportException: [][127.0.0.1:9001][cluster:monitor/nodes/liveness] request_id [9059] timed out after [6303ms]
at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:679) ~[elasticsearch-2.3.3.jar:2.3.3]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_91]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_91]
2016.10.19 19:20:49 WARN ce[][o.e.transport] [Spymaster] Received response for a request that has timed out, sent [19595ms] ago, timed out [13292ms] ago, action [cluster:monitor/nodes/liveness], node [{#transport#-1}{127.0.0.1}{127.0.0.1:9001}], id [9059]
2016.10.19 19:23:11 WARN ce[][o.e.transport] [Spymaster] Received response for a request that has timed out, sent [79969ms] ago, timed out [74883ms] ago, action [cluster:monitor/nodes/liveness], node [{#transport#-1}{127.0.0.1}{127.0.0.1:9001}], id [9063]
2016.10.19 19:23:16 INFO ce[][o.e.client.transport] [Spymaster] failed to get node info for {#transport#-1}{127.0.0.1}{
127.0.0.1:9001}, disconnecting...
org.elasticsearch.transport.ReceiveTimeoutTransportException: [][127.0.0.1:9001][cluster:monitor/nodes/liveness] request_id [9063] timed out after [5086ms]
at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:679) ~[elasticsearch-2.3.3.jar:2.3.3]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_91]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_91]
2016.10.19 19:25:19 INFO ce[][o.e.client.transport] [Spymaster] failed to get node info for {#transport#-1}{127.0.0.1}{
127.0.0.1:9001}, disconnecting...
org.elasticsearch.transport.ReceiveTimeoutTransportException: [][127.0.0.1:9001][cluster:monitor/nodes/liveness] request_id [9065] timed out after [9033ms]
at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:679) ~[elasticsearch-2.3.3.jar:2.3.3]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_91]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_91]
2016.10.19 19:25:20 WARN ce[][o.e.transport] [Spymaster] Received response for a request that has timed out, sent [29267ms] ago, timed out [20234ms] ago, action [cluster:monitor/nodes/liveness], node [{#transport#-1}{127.0.0.1}{127.0.0.1:9001}], id [9065]
it goes on like this, and than:
2016.10.19 19:36:56 WARN ce[][o.e.transport] [Spymaster] Received response for a request that has timed out, sent [9580ms] ago, timed out [3589ms] ago, action [cluster:monitor/nodes/liveness], node [{#transport#-1}{127.0.0.1}{127.0.0.1:9001}], id [9108]
2016.10.19 19:37:03 INFO ce[][o.e.client.transport] [Spymaster] failed to get node info for {#transport#-1}{127.0.0.1}{
127.0.0.1:9001}, disconnecting...
org.elasticsearch.transport.ReceiveTimeoutTransportException: [][127.0.0.1:9001][cluster:monitor/nodes/liveness] request_id [9108] timed out after [5991ms]
at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:679) ~[elasticsearch-2.3.3.jar:2.3.3]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_91]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_91]
java.lang.OutOfMemoryError: Java heap space
Dumping heap to java_pid1856.hprof ...
Heap dump file created [692445147 bytes in 24.050 secs]
2016.10.19 19:39:38 ERROR ce[AVfd0-qcobGjwNjBKtkg][o.s.s.c.t.CeWorkerCallableImpl] Failed to execute task AVfd0-qcobGjwNjBKtkg
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Unknown Source) ~[na:1.8.0_91]
at java.io.ByteArrayOutputStream.toByteArray(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectStreamClass.computeDefaultSUID(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectStreamClass.access$100(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectStreamClass$1.run(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectStreamClass$1.run(Unknown Source) ~[na:1.8.0_91]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_91]
at java.io.ObjectStreamClass.getSerialVersionUID(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectStreamClass.writeNonProxy(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectOutputStream.writeClassDescriptor(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectOutputStream.writeNonProxyDesc(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectOutputStream.writeClassDesc(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectOutputStream.writeObject0(Unknown Source) ~[na:1.8.0_91]
at java.io.ObjectOutputStream.writeObject(Unknown Source) ~[na:1.8.0_91]
at org.sonar.server.util.cache.DiskCache$DiskAppender.append(DiskCache.java:96) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.issue.IntegrateIssuesVisitor.process(IntegrateIssuesVisitor.java:117) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.issue.IntegrateIssuesVisitor.fillNewOpenIssues(IntegrateIssuesVisitor.java:92) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.issue.IntegrateIssuesVisitor.processIssues(IntegrateIssuesVisitor.java:78) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.issue.IntegrateIssuesVisitor.visitAny(IntegrateIssuesVisitor.java:63) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.TypeAwareVisitorWrapper.visitAny(TypeAwareVisitorWrapper.java:82) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visitNode(VisitorsCrawler.java:117) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visitImpl(VisitorsCrawler.java:100) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visit(VisitorsCrawler.java:72) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visitChildren(VisitorsCrawler.java:110) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visitImpl(VisitorsCrawler.java:97) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visit(VisitorsCrawler.java:72) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visitChildren(VisitorsCrawler.java:110) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visitImpl(VisitorsCrawler.java:97) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.component.VisitorsCrawler.visit(VisitorsCrawler.java:72) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.projectanalysis.step.ExecuteVisitorsStep.execute(ExecuteVisitorsStep.java:51) ~[sonar-server-6.1.jar:na]
at org.sonar.server.computation.task.step.ComputationStepExecutor.executeSteps(ComputationStepExecutor.java:64) ~[sonar-server-6.1.jar:na]
2016.10.19 19:39:50 ERROR ce[AVfd0-qcobGjwNjBKtkg][o.s.s.c.t.CeWorkerCallableImpl] Executed task | project=MyProject | type=REPORT | id=AVfd0-qcobGjwNjBKtkg | time=3290602ms