java lang NoSuchMethodError java util concurrent ConcurrentHashMap keySet Ljava util concurrent ConcurrentHashMap KeySetView

Question

Hi Guys,

I tried to run Hbase Shell in my system. I set all the properties properly, but still I got this below error.

+    <programlisting>Caused by: java.lang.NoSuchMethodError: java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
+  at org.apache.hadoop.hbase.master.ServerManager.findServerWithSameHostnamePortWithLock(ServerManager.java:393)
+  at org.apache.hadoop.hbase.master.ServerManager.checkAndRecordNewServer(ServerManager.java:307)
+  at org.apache.hadoop.hbase.master.ServerManager.regionServerStartup(ServerManager.java:244)
+  at org.apache.hadoop.hbase.master.MasterRpcServices.regionServerStartup(MasterRpcServices.java:304)
+  at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$2.callBlockingMethod(RegionServerStatusProtos.java:7910)
+  at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2020)
+  ... 4 more</programlisting>

How can I solve this below error?

Answer 1

Hi@akhtar,

I think there is a problem in your jdk version. It is not compatible with Hbase. Check which jdk version is compatible with which Hbase version.