fix:修复pickAddress

Author: chuntaojun

polaris-sync-commons/src/main/java/cn/polarismesh/polaris/sync/common/rest/RestOperator.java

@@ -48,9 +48,6 @@ public static String pickAddress(List<String> addresses) {
             return addresses.get(0);
         }
         int i = ThreadLocalRandom.current().nextInt(addresses.size());
-        if (i >= addresses.size()) {
-            i = 0;
-        }
         return addresses.get(i);
     }
 

polaris-sync-registry-core/src/main/java/cn/polarismesh/polaris/sync/registry/tasks/PullTask.java

@@ -27,6 +27,8 @@
 import com.tencent.polaris.client.pb.ResponseProto.DiscoverResponse;
 import com.tencent.polaris.client.pb.ServiceProto.Instance;
 import java.io.ByteArrayInputStream;
+import java.io.PrintWriter;
+import java.io.StringWriter;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
@@ -87,9 +89,10 @@ public void run() {
                 }
             }
         } catch (Throwable e) {
-            ByteArrayInputStream in = new ByteArrayInputStream()
-            e.printStackTrace();
-            LOG.error("[Core] pull task(source {}) encounter exception {}", source.getName(), e);
+            StringWriter sw = new StringWriter();
+            PrintWriter pw = new PrintWriter(sw);
+            e.printStackTrace(pw);
+            LOG.error("[Core] pull task(source {}) encounter exception {}", source.getName(), sw);
         }
     }