Hi, After I upgrade our env. from 1.5.2.1 to 2.0.0, building things go well, However, every query to older(generated before upgrading) return empty(0 result), and newly build segment return result success.
I add some debug log and find in GTFilterScanner, I get 0 input from inputIterator and return 0 to GTAggregateScanner, Here is my kylin log : 2017-08-22 11:46:07,308 INFO [kylin-coproc--pool157-t3958] v2.CubeHBaseEndpointRPC:200 : <sub-thread for Query e6e13b48-f28c-422c-b941-dfec2e836ea5 GTScanRequest 1b b7584d>Endpoint RPC returned from HTable NEW_KYLIN_JDVOZ5IBWC Shard \x4E\x45\x57\x5F\x4B\x59\x4C\x49\x4E\x5F\x4A\x44\x56\x4F\x5A\x35\x49\x42\x57\x43\x2C\x00\x01\x2C\ x31\x35\x30\x33\x31\x38\x31\x39\x34\x38\x33\x33\x33\x2E\x62\x37\x35\x31\x38\x32\x35\x32\x32\x63\x36\x64\x61\x63\x36\x39\x32\x33\x33\x63\x33\x32\x30\x38\x36\x34\x62\x 39\x38\x31\x37\x62\x2E on host: hz-hbase2.photo.163.org.Total scanned row: 0. Total scanned bytes: 0. Total filtered/aggred row: 0. Time elapsed in EP: 2(ms). Server CPU usage: 0.13636363636363635, server physical mem left: 4.35449856E8, server swap mem left:8.589930496E9.Etc message: start latency: 6@0,agg done@1,compress done@ 1,server stats done@2, debugGitTag:997bac07cd74f9a3ac9d50714e8740ddc2e5c1c7;.Normal Complete: true.Compressed row size: 8 2017-08-22 11:46:07,561 INFO [kylin-coproc--pool157-t3961] v2.CubeHBaseEndpointRPC:200 : <sub-thread for Query e6e13b48-f28c-422c-b941-dfec2e836ea5 GTScanRequest 63 c14bf2>Endpoint RPC returned from HTable KYLIN_0H7MAKPJQL Shard \x4B\x59\x4C\x49\x4E\x5F\x30\x48\x37\x4D\x41\x4B\x50\x4A\x51\x4C\x2C\x2C\x31\x35\x30\x33\x33\x36\x38\ x31\x36\x34\x37\x32\x32\x2E\x30\x63\x37\x39\x64\x34\x63\x36\x62\x63\x61\x62\x64\x39\x36\x64\x61\x61\x34\x31\x34\x32\x64\x64\x35\x64\x37\x64\x31\x34\x65\x34\x2E on ho st: hz-hmaster0.xs.163.org.Total scanned row: 87935. Total scanned bytes: 4752238. Total filtered/aggred row: 87934. Time elapsed in EP: 254(ms). Server CPU usage: 0 .10531496062992125, server physical mem left: 4.39107584E8, server swap mem left:2.553663488E9.Etc message: start latency: 2@1,agg done@253,compress done@253,server stats done@254, debugGitTag:997bac07cd74f9a3ac9d50714e8740ddc2e5c1c7;.Normal Complete: true.Compressed row size: 13 the first is older segment and later one is newly build segment, there scan ranges are the same. Here is my hbase log about the empty result : 2017-08-22 11:04:30,378 DEBUG [RpcServer.reader=9,port=60020] security.HBaseSaslRpcServer: SASL server GSSAPI callback: setting canonicalized client ID: nrpt/d...@hadoop.hz.netease.com 2017-08-22 11:04:31,714 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-226] gridtable.GTScanRequest: pre aggregating results before returning 2017-08-22 11:04:31,714 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-226] gridtable.GTAggregateScanner: GTAggregateScanner input rows: 0 2017-08-22 11:04:31,714 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-226] endpoint.CubeVisitService: Total scanned 0 rows and 0 bytes 2017-08-22 11:04:31,714 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-226] endpoint.CubeVisitService: Size of final result = 8 (0 before compressing) 2017-08-22 11:04:31,726 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-142] gridtable.GTScanRequest: pre aggregating results before returning 2017-08-22 11:04:31,727 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-142] gridtable.GTAggregateScanner: GTAggregateScanner input rows: 0 2017-08-22 11:04:31,727 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-142] endpoint.CubeVisitService: Total scanned 0 rows and 0 bytes 2017-08-22 11:04:31,727 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-142] endpoint.CubeVisitService: Size of final result = 8 (0 before compressing) 2017-08-22 11:04:31,730 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-221] gridtable.GTScanRequest: pre aggregating results before returning 2017-08-22 11:04:31,731 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-221] gridtable.GTAggregateScanner: GTAggregateScanner input rows: 0 2017-08-22 11:04:31,731 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-221] endpoint.CubeVisitService: Total scanned 0 rows and 0 bytes 2017-08-22 11:04:31,731 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-221] endpoint.CubeVisitService: Size of final result = 8 (0 before compressing) 2017-08-22 11:04:31,740 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-194] gridtable.GTScanRequest: pre aggregating results before returning 2017-08-22 11:04:31,740 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-194] gridtable.GTAggregateScanner: GTAggregateScanner input rows: 0 2017-08-22 11:04:31,740 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-194] endpoint.CubeVisitService: Total scanned 0 rows and 0 bytes 2017-08-22 11:04:31,740 INFO [Query 25ed5aec-6a9b-4507-bed4-198812cc25f0-194] endpoint.CubeVisitService: Size of final result = 8 (0 before compressing) I guess maybe some rowkey rule is changed? Did anyone meet the problem? Thanks a lot.
