improvement: add detailed information when operation has exception

src/main/java/com/xiaomi/infra/pegasus/client/PException.java

@@ -4,6 +4,7 @@
 package com.xiaomi.infra.pegasus.client;
 
 import com.xiaomi.infra.pegasus.base.error_code;
+import com.xiaomi.infra.pegasus.client.PegasusTable.Request;
 import com.xiaomi.infra.pegasus.rpc.ReplicationException;
 import java.util.concurrent.TimeoutException;
 
@@ -40,13 +41,14 @@ static PException threadInterrupted(String tableName, InterruptedException e) {
             String.format("[table=%s] Thread was interrupted: %s", tableName, e.getMessage())));
   }
 
-  static PException timeout(String tableName, int timeout, TimeoutException e) {
+  static PException timeout(
+      String metaList, String tableName, Request request, int timeout, TimeoutException e) {
     return new PException(
         new ReplicationException(
             error_code.error_types.ERR_TIMEOUT,
             String.format(
-                "[table=%s, timeout=%dms] Timeout on Future await: %s",
-                tableName, timeout, e.getMessage())));
+                "[metaServer=%s, table=%s, request=%s, timeout=%dms] Timeout on Future await: %s",
+                metaList, tableName, request.toString(), timeout, e.getMessage())));
   }
 
   private static String loadVersion() {

src/main/java/com/xiaomi/infra/pegasus/client/PegasusClient.java

@@ -32,6 +32,7 @@ public class PegasusClient implements PegasusClientInterface {
   private final Properties config;
   private final ConcurrentHashMap<String, PegasusTable> tableMap;
   private final Object tableMapLock;
+  private final String[] metaList;
   private Cluster cluster;
 
   private static class PegasusHasher implements KeyHasher {
@@ -88,6 +89,7 @@ public PegasusClient(Properties config) throws PException {
     this.cluster = Cluster.createCluster(config);
     this.tableMap = new ConcurrentHashMap<String, PegasusTable>();
     this.tableMapLock = new Object();
+    this.metaList = cluster.getMetaList();
     this.enableWriteLimit =
         Boolean.parseBoolean(
             config.getProperty(PEGASUS_ENABLE_WRITE_LIMIT, PEGASUS_ENABLE_WRITE_LIMIT_DEF));
@@ -98,6 +100,10 @@ public boolean isWriteLimitEnabled() {
     return enableWriteLimit;
   }
 
+  String getMetaList() {
+    return Arrays.toString(metaList);
+  }
+
   @Override
   public void finalize() {
     close();