JanusGraph requires Java 8 (Standard Edition).

JanusGraph dev,

I am getting the below exception while management.commit(); using java11 works well in java8, using janusgraph version 0.4.0.

Any help on this is appreciated.

2019-09-23 05:06:37,707 ERROR - [main:] ~ Could not commit transaction [1] due to storage exception in system-commit (StandardJanusGraph:710)
org.janusgraph.core.JanusGraphException: Could not execute operation due to backend exception
        at org.janusgraph.diskstorage.util.BackendOperation.execute(BackendOperation.java:56)
        at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction.persist(CacheTransaction.java:91)
.
.
Caused by: org.janusgraph.diskstorage.locking.PermanentLockingException: Permanent locking failure
        at org.janusgraph.diskstorage.locking.AbstractLocker.checkLocks(AbstractLocker.java:359)
        at org.janusgraph.diskstorage.locking.consistentkey.ExpectedValueCheckingTransaction.checkAllLocks(ExpectedValueCheckingTransaction.java:175)
        at org.janusgraph.diskstorage.locking.consistentkey.ExpectedValueCheckingTransaction.prepareForMutations(ExpectedValueCheckingTransaction.java:154)
        at org.janusgraph.diskstorage.locking.consistentkey.ExpectedValueCheckingStoreManager.mutateMany(ExpectedValueCheckingStoreManager.java:72)
        at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction$1.call(CacheTransaction.java:94)
        at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction$1.call(CacheTransaction.java:91)
        at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:68)
        at org.janusgraph.diskstorage.util.BackendOperation.execute(BackendOperation.java:54)
        ... 85 more
Caused by: org.janusgraph.diskstorage.PermanentBackendException: Read 1 locks with our rid  48- 97- 52- 49- 51- 48- 55-100- 49- 52- 53- 57- 50- 45-109- 97- 48- 57- 50- 51- 45- 49- 45-118-112- 99- 45- 99-108-111-117-100-101-114- 97- 45- 99-111-109- 49 but mismatched timestamps; no lock column contained our timestamp (2019-09-23T12:06:37.571103Z)
        at org.janusgraph.diskstorage.locking.consistentkey.ConsistentKeyLocker.checkSeniority(ConsistentKeyLocker.java:528)
        at org.janusgraph.diskstorage.locking.consistentkey.ConsistentKeyLocker.checkSingleLock(ConsistentKeyLocker.java:454)
        at org.janusgraph.diskstorage.locking.consistentkey.ConsistentKeyLocker.checkSingleLock(ConsistentKeyLocker.java:118)
        at org.janusgraph.diskstorage.locking.AbstractLocker.checkLocks(AbstractLocker.java:351)
        ... 92 more
2019-09-23 05:06:37,711 ERROR - [main:] ~ Could not commit transaction [1] due to exception (StandardJanusGraph:794)
org.janusgraph.core.JanusGraphException: Could not execute operation due to backend exception
        at org.janusgraph.diskstorage.util.BackendOperation.execute(BackendOperation.java:56)
        at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction.persist(CacheTransaction.java:91)