BENGALURU, Aug 31 (Reuters) - Indian shares hit record highs for a second straight session on Tuesday, boosted by technology stocks and telecom firm Bharti Airtel, with investors focusing on economic growth data due later in the day. The blue-chip NSE Nifty 50 index (.NSEI) was up 0.18% at 16,960.75 by 0347 GMT and the benchmark S&P BSE Sensex (.BSESN) rose 0.21% to 57,010.92. Both the indexes are set to post a fourth consecutive monthly gain. Bharti Airtel Ltd (BRTI.NS) and Tech Mahindra Ltd (TEML.NS) were the top performers on the Nifty 50, while the Nifty IT index (.NIFTYIT), with its 1.12% jump, was among the top gainers among other sub-indexes. India"s GDP data is set to be released at 1200 GMT. The country"s economy likely rebounded in the April-June quarter from a deep slump last year helped by improved manufacturing and despite a devastating second wave of COVID-19 cases, according to a Reuters survey of economists. read more In the broader Asian markets, stocks fell as worries about China"s slowing economic growth weighed on sentiment. Reporting by Rama Venkat in Bengaluru; editing by Uttaresh.V Our Standards: The Thomson Reuters Trust Principles.