Here is my code

fs.open(new Path(path))

Sometimes the following error occur，could someone know what cause it and how to solve it?

SWTID:ad93c96d-dd42-4c93-8f8f-fa3f0726b83f [Handled] exception java.lang.IllegalStateException: null 
org.apache.hadoop.thirdparty.com.google.common.base.Preconditions.checkState(Preconditions.java:494) ~[hadoop-shaded-guava-1.1.1.jar!/:1.1.1] 
    org.apache.hadoop.ipc.Client.setCallIdAndRetryCount(Client.java:119) ~[hadoop-common-3.3.3.jar!/:?] 
    org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:162) ~[hadoop-common-3.3.3.jar!/:?] 
    org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157) ~[hadoop-common-3.3.3.jar!/:?] 
    org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95) ~[hadoop-common-3.3.3.jar!/:?] 
    org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359) ~[hadoop-common-3.3.3.jar!/:?] 
    com.sun.proxy.$Proxy329.getBlockLocations(Unknown Source) ~[?:?] 
    org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:900) ~[hadoop-hdfs-client-3.3.3.jar!/:?] 
    org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:889) ~[hadoop-hdfs-client-3.3.3.jar!/:?] 
    org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:878) ~[hadoop-hdfs-client-3.3.3.jar!/:?] 
    org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1046) ~[hadoop-hdfs-client-3.3.3.jar!/:?] 
    org.apache.hadoop.hdfs.DistributedFileSystem$4.doCall(DistributedFileSystem.java:340) ~[hadoop-hdfs-client-3.3.3.jar!/:?] 
    org.apache.hadoop.hdfs.DistributedFileSystem$4.doCall(DistributedFileSystem.java:336) ~[hadoop-hdfs-client-3.3.3.jar!/:?] 
    org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) ~[hadoop-common-3.3.3.jar!/:?] 
    org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:353) ~[hadoop-hdfs-client-3.3.3.jar!/:?]