sandhyasun opened a new pull request #1845: [TRAFODION-3263] and other misc 
fixes for lob locking and refactoring 
URL: https://github.com/apache/trafodion/pull/1845
 
 
   These fixes are cherry picked from another branch and all were reviewed 
earlier.
   1. Fixes a core that was caused since ExLOB::update was missing a chunk of 
code very similar to insert . This code path is taken when updating a NULL 
entry. Added a testcase for it in TEST130.
   2. Regressions on Jenkins have been getting an InterruptException. Made a 
change to call "close" only once instead of twice. Also added a retry to take 
care of a small window that can cause issues when there are multiple LOB 
updates/inserts going on parallelly.
   3. SQL_EXEC_SwitchContext was not allowing switching back to default 
context. In the case of Udr ResultSets we make an exception with this change.
   In general all work will be done in the connections that are set up. So 
setContext in Udr ResultSet will still not allow switching to the default 
context. Only resetContext() will allow it. This is a day-one bug.
   
   

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