use sscanf to extract info from a timestamp string. Now it supports 'YYYY-MM-DD' format. add a simple test case
add a new test case
add java support for shorter timestamp
Merge branch 'master' into ENG-5949-EE-Component
add test case in TestCSVLoader
add a test case indicating we reset the stats when starting a new fragment
simplify the code according to Paul's comment
add rtrim to process date string, and add test cases for leading/trailing spaces and invalid microseconds
remove castAsTimestamp in the ValueFactory
remove delete all statement in DeleteRows.java
add test case to show peak memory usage is larger than current memory usage
simplify test case
add m_ prefix before member, to follow rules
Merge branch 'master' into ENG-5949-EE-Component
roll back to process string manually
add more invalid string input as test cases
Merge branch 'master' into ENG-6361
clean code according Paul's review
Merge pull request #1433 from VoltDB/ENG-5949-EE-Component

ENG-5949-shorter-timestamp string
clean code according to Paul's comment