Nadav Har'El fa284f6307 Add query UUID to read command ...

This patch adds the parameter to read_command which is needed for
caching of readers during multiple pages of a paged queries, which
we will introduce in the next patches.

The query_uuid is a UUID of a previously saved reader, which
the replica is now asked to recall and resume (if this saved reader is
no longer in the cache, it is fine, a new reader will be started).

Additionally a helper flag is_first_page is added so that the replica
can avoid doing any cache lookups (and incrementing miss counters) for
the first page.

Signed-off-by: Nadav Har'El <nyh@scylladb.com>

2018-03-13 10:34:34 +02:00

7.7 KiB

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