* HBASE-24382 Flush partial stores of region filtered by seqId when archive wal due to too many wals
* fix checkstyle and javadoc issue
* fix javadoc issues
* move the geting of stores to HRegion, since it should not be part of FlushPolicy, and comment fix
* fix checkstyle issue
* add some comment
* remove the forceFlushAllStores since we can use families to determine how to select stores to flush
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: stack <stack@duboce.net>
c0461207ee