[jira] [Created] (TRAFODION-1014) LP Bug: 1421747 - SQL Upsert using load periodically not saving all rows

["Alice Chen (JIRA)" <ji...@apache.org>]

Alice Chen created TRAFODION-1014:
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             Summary: LP Bug: 1421747 - SQL Upsert using load periodically not saving all rows
                 Key: TRAFODION-1014
                 URL: https://issues.apache.org/jira/browse/TRAFODION-1014
             Project: Apache Trafodion
          Issue Type: Bug
          Components: sql-cmp
            Reporter: Gary W Hall
            Assignee: Suresh Subbiah
            Priority: Critical
             Fix For: 2.0-incubating


When running a script that initiates 32 parallel streams loading a table, we have found that periodically there are gaps in the resulting saved data...for example we will find that we are missing stock items #29485 thru #30847 inclusive for Warehouse #5.  The number of gaps found for a given load run varies...normally none, but I've seen as many as eight gaps of missing data.

The sql statement used in all streams is as follows:

sql_statement = "upsert using load into " + stock_table_name
                  + " (S_I_ID, S_W_ID, S_QUANTITY, S_DIST_01, S_DIST_02, S_DIST_03, S_DIST_04,"
                  + " S_DIST_05, S_DIST_06, S_DIST_07, S_DIST_08, S_DIST_09, S_DIST_10,"
                  + " S_YTD, S_ORDER_CNT, S_REMOTE_CNT, S_DATA)"
                  + " values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";

This is not easily repeatable…I’ve run the script to drop/create/load this table 12 times today, resulting in some missing rows 4 of the 12 times.  Worst case we were missing 0.03% of the required rows in the table…obviously, ANY missing data is not acceptable.

Our test environment control parameters (in case any are of value to you)...

OrderEntryLoader

      Load Starting : 2015-02-13 04:58:13
       PropertyFile : trafodion.properties
           Datebase : trafodion
             Schema : trafodion.javabench
        ScaleFactor : 512
            Streams : 32
           Maintian : true
               Load : true
         AutoCommit : true
          BatchSize : 1000
             Upsert : true
          UsingLoad : true
     IntervalLength : 60



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