DN serializer in Mavibot partition is throwing StreamCorruptedException

In a test after injecting 3000 <Dn,Entry> tuples the below exception is occuring.

java.io.StreamCorruptedException: invalid stream header: 00000000
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:781)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:278)
at org.apache.directory.server.core.partition.impl.btree.mavibot.DnSerializer.deserialize(DnSerializer.java:145)
at org.apache.directory.server.core.partition.impl.btree.mavibot.DnSerializer.deserialize(DnSerializer.java:138)
at org.apache.directory.server.core.partition.impl.btree.mavibot.DnSerializer.deserialize(DnSerializer.java:1)
at org.apache.directory.mavibot.btree.managed.RecordManager.readNodeKeysAndValues(RecordManager.java:696)
at org.apache.directory.mavibot.btree.managed.RecordManager.readPage(RecordManager.java:608)
at org.apache.directory.mavibot.btree.managed.RecordManager.deserialize(RecordManager.java:567)
at org.apache.directory.mavibot.btree.managed.PageHolder.fetchElement(PageHolder.java:124)
at org.apache.directory.mavibot.btree.managed.PageHolder.getValue(PageHolder.java:89)
at org.apache.directory.mavibot.btree.managed.PageHolder.getValue(PageHolder.java:41)
at org.apache.directory.mavibot.btree.managed.Node.insert(Node.java:147)
at org.apache.directory.mavibot.btree.managed.Node.insert(Node.java:150)
at org.apache.directory.mavibot.btree.managed.BTree.insert(BTree.java:1018)
at org.apache.directory.mavibot.btree.managed.BTree.insert(BTree.java:620)