Project: datamanagement
Issue DM-1841: Fix query error on case03: "SELECT scienceCcdExposureId FROM Science_Ccd_Exposure_Metadata" 
Xrootd prevents the worker to return more than 2MB data. On GB-sized data: {code} mysql --host=127.0.0.1 --port=4040 --user=qsmaster --batch -e "SELECT scienceCcdExposureId FROM Science_Ccd_Exposure_Metadata" ERROR 4120 (Proxy) at line 1: Error during execution: -1 Ref=1 Resource(/chk/qservTest_case03_qserv/1234567890): 20150123-16:27:45, Error merging result, 1420, Result message MD5 mismatch (-1) {code} On integration test case 04: {code} qserv@clrinfoport09:~/src/qserv (u/fjammes/DM-1841 *)⟫ mysql --host=127.0.0.1 --port=4040 --user=qsmaster qservTest_case04_qserv -e "SELECT * FROM DeepForcedSource" ERROR 4120 (Proxy) at line 1: Error during execution: -1 Ref=1 Resource(/chk/qservTest_case04_qserv/6970): 20150204-16:23:43, Error merging result, 1420, Result message MD5 mismatch Ref=2 Resource(/chk/qservTest_case04_qserv/7138): 20150204-16:23:43, Error merging result, 1420, Result message MD5 mismatch Ref=3 (-1) {code}
Story points: 5