@PUT
  @Produces("text/plain")
  @ApiOperation(value = "Updates multiple hosts in a single request")
  @ApiImplicitParams({
    @ApiImplicitParam(dataType = HOST_REQUEST_TYPE, paramType = PARAM_TYPE_BODY, allowMultiple = true)
  })
  @ApiResponses({
    @ApiResponse(code = HttpStatus.SC_OK, message = MSG_SUCCESSFUL_OPERATION),
    @ApiResponse(code = HttpStatus.SC_ACCEPTED, message = MSG_REQUEST_ACCEPTED),
    @ApiResponse(code = HttpStatus.SC_BAD_REQUEST, message = MSG_INVALID_ARGUMENTS),
    @ApiResponse(code = HttpStatus.SC_NOT_FOUND, message = MSG_CLUSTER_OR_HOST_NOT_FOUND),
    @ApiResponse(code = HttpStatus.SC_UNAUTHORIZED, message = MSG_NOT_AUTHENTICATED),
    @ApiResponse(code = HttpStatus.SC_FORBIDDEN, message = MSG_PERMISSION_DENIED),
    @ApiResponse(code = HttpStatus.SC_INTERNAL_SERVER_ERROR, message = MSG_SERVER_ERROR),
  })
  public Response updateHosts(String body, @Context HttpHeaders headers, @Context UriInfo ui) {
    return handleRequest(headers, body, ui, Request.Type.PUT,
        createHostResource(m_clusterName, null));
  }
Handles PUT /clusters/{clusterID}/hosts
Updates multiple hosts.

@param body     http body
@param headers  http headers
@param ui       uri info

@return information regarding updated host
ambari-server/src/main/java/org/apache/ambari/server/api/services/HostService.java