Function getReadOptions

fdbserver/KeyValueStoreShardedRocksDB.actor.cpp:316–320

Set some useful defaults desired for all reads.

// Set some useful defaults desired for all reads.
rocksdb::ReadOptions getReadOptions() {
	rocksdb::ReadOptions options;
	options.background_purge_on_iterator_cleanup = true;
	return options;
}

struct ReadIterator {
	rocksdb::ColumnFamilyHandle* cf;