PHOENIX-1400 Copy small attribute in ScanUtil.
PHOENIX-1403 Correct synchronization in ConnectionQueryServicesImpl.init
PHOENIX-1401 SYSTEM.SEQUENCE table is not pre-split as expected
PHOENIX-1397 RVC combined with OR on first row key column results in NPE (Samarth Jain)
PHOENIX-1401 SYSTEM.SEQUENCE table is not pre-split as expected
PHOENIX-1406 Use preCompact hook instead of preCompactScannerOpen for stats collection
PHOENIX-1346: Base exception gets wrapped as incompatible jar exception (Samarth Jain)
PHOENIX-1396: Avoid unnecessary ResultSpooler.bin files creation/deletion every time SpoolingResultIterator is used
PHOENIX-1404 Ignore call to ResultSet#setFetchSize

Don't throw an exception on calls to ResultSet#setFetchSize,
instead just ignore the call.
PHOENIX-1402 Don't recalculate stats on split
PHOENIX-1416 Given a schema name, DatabaseMetadata.getTables and getColumns calls erroneously match tables without schema
PHOENIX-1413 Add Phoenix coprocessors with configurable priority
PHOENIX-1394 getColumnDisplaySize() method returns incorrect value for varchar columns (Samarth Jain)
PHOENIX-1418 Optionally display number of parallel chunks in explain plan
PHOENIX-1419 Update eclipse preferences file with correct header information (Samarth Jain)
PHOENIX-1405 Problem referencing lower-case column names with Phoenix / Pig / Spark (Robert Roland)
PHOENIX-1407 Set scan caching based on fetch size

Use the fetch size set on a Statement to set the caching setting
on underlying scans. This patch also ensures that the default scan
size is set to QueryServices.SCAN_CACHE_SIZE_ATTRIB (before it
was not set at all).
Fix upgrade for system.sequence table
Set version to 4.2.1 and update CHANGES
PHOENIX-1424 Drop cascade field should be optional