David Wayne Birdsall
Gonzalo E Correa
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[TRAFODION-3107] selct count(0) with long varchar hitting jvm OOM error
...selct count(0) hitting jvm OOM error when clob as varchar and insert some 5MB images.org.trafodion.jdbc.t4.TrafT4Exception: *** ERROR Unable to access Hbase interface. Call to ...
, 2018-06-19, 18:29
[TRAFODION-3004] SQL dense buffers structure contain a size limit due to an incorrect cast
...The problem is that we cast the length from UINT32 to unsigned short, in SqlBufferDense::add_tuple_desc(), before actually allocating the buffer for the tupp_descriptor. In my case, since th...
, 2018-06-15, 20:35
[TRAFODION-3092] Incorrect rowcount reported after commit conflict error
...When there are 2 sessions doing concurrent SQL IUD operations like update or insert, a commit conflict can occur. When this error occurs, the rowcount reposrted by the SQL diagnostics is inc...
, 2018-06-15, 20:30
[TRAFODION-2946] LOB : Locking/transaction support needed for LOB files for DDL and IUD operations
...Trafodion DTM needs to recognize LOB HDFS data files that contain the actual critical data for a LOB column and treat them as part of the Trafodion object that contains the LOB column. The T...
, 2018-06-07, 22:17
[TRAFODION-2949] LOB: Address performance issues related to inserts/extracts in tables containing LOB columns
...Investigate bottlenecks in the insert and update code paths.A couple of bottlenecks identified initially were hdfsWrite and the LOBCLi call. Investigate if lib hdfs write operation is signif...
, 2018-06-05, 16:24
[TRAFODION-2874] LOB: Add syntax to return filename of a LOB data file for external LOBs.
...For external LOBs, Trafodion does not save the LOB data in it's internal trafodion namespace. It saves only the LOB handle information and the actual LOB data remains outside in ...
, 2018-05-31, 22:57
[TRAFODION-2873] LOB:Cleanup usage of LOBLoad which is deprecated and LobGlobals
...The LOBGlobals structure contains information relevant to LOBLoad which was an operator initially designed to operate at the disk level. It is no longer needed/relevant so cleaning up that c...
, 2018-04-02, 20:28
[TRAFODION-2832] LOB: Insert hangs with a mutli-row insertion that requires internal stringtolob() conversion
...The LOB feature allows the user to specify a char string as the insert value. EsgynDB will automatically convert it into a LOB datatype, just as if the user has specified stringtolob() expli...
, 2018-03-27, 17:39
[TRAFODION-2982] JNI HDFS interface should support varied sized large buffers for read/write
...The newly developed JNI API for reading/writing to hdfs could be used for LOB read/write if it can support efficient reading/writing to HDFS. The larger the buffer sizes it can support, the...
, 2018-03-07, 06:42
[TRAFODION-1151] LP Bug: 1442483 - SQL queries hang when Region Server goes down
...When the RS goes down - for example killed by zookeeper due to out of memory conditions, the SQL query that was executing hangs and doesn't timeout for atleast an hour . But subsequent SQL q...
, 2018-03-06, 22:44
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