When adding a datacenter to a keyspace (following the Last Pickle [Data
Center Switch][lp] playbook), I ran into a "Configuration exception merging
remote schema" error. The nodes in one datacenter didn't converge to the
new schema version, and after restarting them, I saw the symptoms described
in
If data size not big, you may try copy primary key values to a file, then
copy back to table, then do compaction.
Both copy and compact may set some throttles. If size not so big, you may
try get partition key values first, then loop partition key values to get
all primary key values to file.
On