upgrading from 7.3 --> 7.9 on centos7 using openjdk
using port 8080
sonar.log: 2019.07.08 14:27:55 DEBUG app[][o.e.c.u.c.QueueResizingEsThreadPoolExecutor] thread pool [_client_/search_throttled] will adjust queue by [50] when determining automatic queue size
2019.07.08 14:27:55 DEBUG app[][o.e.t.ThreadPool] created thread pool: name [search_throttled], size [1], queue size [100]
2019.07.08 14:27:55 DEBUG app[][i.n.u.i.PlatformDependent0] -Dio.netty.noUnsafe: false
2019.07.08 14:27:55 DEBUG app[][i.n.u.i.PlatformDependent0] Java version: 11
2019.07.08 14:27:55 DEBUG app[][i.n.u.i.PlatformDependent0] sun.misc.Unsafe.theUnsafe: available
2019.07.08 14:27:55 DEBUG app[][i.n.u.i.PlatformDependent0] sun.misc.Unsafe.copyMemory: available
2019.07.08 14:27:55 DEBUG app[][i.n.u.i.PlatformDependent0] java.nio.Buffer.address: available
2019.07.08 14:27:55 DEBUG app[][i.n.u.i.PlatformDependent0] direct buffer constructor: unavailable
2019.07.08 14:27:55 DEBUG app[][i.n.u.i.PlatformDependent0] jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailable
java.lang.IllegalAccessException: class io.netty.util.internal.PlatformDependent0$6 cannot access class jdk.internal.misc.Unsafe (in module java.base) because module java.base does not export jdk.internal.misc to unnamed module @7e0b37bc
at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:361)
at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:59```
es.log: 2019.07.08 14:27:59 DEBUG es[][i.n.u.i.PlatformDependent] -Dio.netty.uninitializedArrayAllocationThreshold: -1
2019.07.08 14:27:59 DEBUG es[][i.n.u.i.CleanerJava9] java.nio.ByteBuffer.cleaner(): unavailable
java.lang.UnsupportedOperationException: sun.misc.Unsafe unavailable
at io.netty.util.internal.CleanerJava9.<clinit>(CleanerJava9.java:68) [netty-common-4.1.32.Final.jar:4.1.32.Final]
019.07.08 14:28:04 ERROR es[][o.e.b.Bootstrap] node validation exception
[1] bootstrap checks failed
[1]: initial heap size [536870912] not equal to maximum heap size [1073741824]; this can cause resize pauses and prevents mlockall from locking the entire heap
2019.07.08 14:28:04 INFO es[][o.e.n.Node] stopping ...
2019.07.08 14:28:04 INFO es[][o.e.n.Node] stopped
i am using 1. Mircrosoft SQL server 2. sonar web.host: --> used my server ip & port 8080, at this time no other process is being using that port & using default -> /usr/lib/jvm/java-11-openjdk-11.0.3.7-0.el7_6.x86_64 …
Note: There are no web.logs file or other loggers created