Hbase scan timeout

Question

I know Hbase timeouts can be configured db-wide, but I was wondering if it's possible to set a timeout for a Scan from Java? Ideally I would like to be able to set a max timeout for the entire scan, such that I'd stop processing after 1 second.

Answer 1

See if this helps : http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/HConstants.html#HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD

I doubt if it is included in the latest stable release. You have to build it yourself in that case.

Answer 2

You can use these constants in HConstants：

HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD

public static String HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD
The client scanner timeout period in milliseconds.
DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD

public static int DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD
Default value of HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD.

The code use case：

HTable.scannerTimeout

this.scannerTimeout =   
     (int) conf.getLong(HConstants.HBASE_REGIONSERVER_LEASE_PERIOD_KEY, HConstants.DEFAULT_HBASE_REGIONSERVER_LEASE_PERIOD);