mips架构，merge报错

mips架构系统进行性能测试，merge报错
elasticsearch6.3.2 数据量达到10万条报错
elasticsearch7.3.2 数据量达到200万条报错
错误如下：

org.apache.lucene.index.MergePolicy$MergeException : java.lang.ArrayIndexOutOfBoundsException : -1
at org.elasticsearch.index.engine.InternalEngine$EngineMergeScheduler$2.doRun
at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun
Cased By: java.lang.ArrayIndexOutOfBoundsException:-1
at org.apache.lucene.util.fst.ReverseBytesReader.readByte
at org.apache.lucene.util.fst.FST.readLabel(FST.java :542)
at org.apache.lucene.util.fst.FST.readNextRealArc(FST.java 967)
at org.apache.lucene.util.fst.FST.readFirstRealTargetArc(FST.java 874)
at org.apache.lucene.util.fst.FST.readFistTargetArc(FST.java 845)
at org.apache.lucene.util.fst.FSTEnum.pushFirst(FSTEnum.java 498)
at org.apache.lucene.util.fst.FSTEnum.doNext(FSTEnum.java 111)