yifan-c commented on code in PR #188:
URL: 
https://github.com/apache/cassandra-analytics/pull/188#discussion_r3013609682


##########
cassandra-analytics-cdc-sidecar/src/main/java/org/apache/cassandra/cdc/sidecar/SidecarCdcClient.java:
##########
@@ -52,21 +56,42 @@
 import static org.apache.cassandra.spark.utils.Properties.DEFAULT_SIDECAR_PORT;
 import static 
org.apache.cassandra.spark.utils.Properties.DEFAULT_TIMEOUT_SECONDS;
 
-public class SidecarCdcClient
+public class SidecarCdcClient implements AutoCloseable
 {
     final ClientConfig config;
     final SidecarClient sidecarClient;
     final ICdcStats stats;
 
-    public SidecarCdcClient(ClientConfig config,
-                            SidecarClient sidecarClient,
-                            ICdcStats stats)
+    public SidecarCdcClient(ClientConfig clientConfig,
+                            CdcSidecarInstancesProvider instancesProvider,
+                            SecretsProvider secretsProvider,
+                            ICdcStats cdcStats) throws IOException
+    {
+        this(clientConfig,
+             Sidecar.from(new 
SimpleSidecarInstancesProvider(instancesProvider.instances()
+                                                                              
.stream()
+                                                                              
.map(i -> new SidecarInstanceImpl(i.hostname(), i.port()))
+                                                                              
.collect(Collectors.toList())),
+                          clientConfig.toGenericSidecarConfig(),
+                          secretsProvider),
+             cdcStats);
+    }
+
+    private SidecarCdcClient(ClientConfig config,
+                             SidecarClient sidecarClient,
+                             ICdcStats stats)
     {
         this.config = config;
         this.sidecarClient = sidecarClient;
         this.stats = stats;
     }
 
+    @Override
+    public void close() throws Exception
+    {
+        sidecarClient.close();
+    }

Review Comment:
   Please add a detailed comment to explain who closes the shared client and 
when it is closed. 



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