HIVE-27271: Client connection to HS2 fails when transportMode=http, ssl=true, sslTrustStore specified without trustStorePassword in the JDBC URL

Closes #4262

Author: VenuReddy2103

jdbc/src/java/org/apache/hive/jdbc/HiveConnection.java

@@ -803,7 +803,7 @@ protected boolean requestIsAborted(final HttpRequest request) {
           }
           sslTrustStore = KeyStore.getInstance(trustStoreType);
           try (FileInputStream fis = new FileInputStream(sslTrustStorePath)) {
-            sslTrustStore.load(fis, sslTrustStorePassword.toCharArray());
+            sslTrustStore.load(fis, sslTrustStorePassword != null ? sslTrustStorePassword.toCharArray() : null);
           }
           sslContext = SSLContexts.custom().loadTrustMaterial(sslTrustStore, null).build();
           socketFactory =
@@ -1035,7 +1035,7 @@ SSLConnectionSocketFactory getTwoWaySSLSocketFactory() throws SQLException {
         + " Not configured for 2 way SSL connection");
       }
       try (FileInputStream fis = new FileInputStream(trustStorePath)) {
-        sslTrustStore.load(fis, trustStorePassword.toCharArray());
+        sslTrustStore.load(fis, trustStorePassword != null ? trustStorePassword.toCharArray() : null);
       }
       trustManagerFactory.init(sslTrustStore);
       SSLContext context = SSLContext.getInstance("TLS");