@mqureshi, Thanks for your response. We using sqoop data from oracle tables to HDFS( HIVE external table), and then insert into ORC table in HIVE to support data analytics. And our HIVE currently not turn ACID on. Most of tables size currently less than 1TBs. Now there is requirement to update the imported table data in HIVE, because of the source data updated. I seached on web and found it seems ACID are not very good on performance when update and the ACID tables are also not recognized outside of HIVE(e.g. SPARK). We are looking for a most performance approach for it. So I considered to implemented it by using hbase storagehandler or sqoop merge ?
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