@Test
  public void testDefaultMetaOperationTimeout() {
    Configuration conf = HBaseConfiguration.create();
    long clientOperationTimeoutMs = 1000;
    conf.setLong(HConstants.HBASE_CLIENT_OPERATION_TIMEOUT, clientOperationTimeoutMs);
    ConnectionConfiguration config = new ConnectionConfiguration(conf);
    assertEquals(clientOperationTimeoutMs, config.getOperationTimeout());
    assertEquals(clientOperationTimeoutMs, config.getMetaOperationTimeout());
  }
See HBASE-28608. Configuration tests for (non async) connections
hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestConnectionConfiguration.java