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Nadav Har'El 253387ea07 alternator: implement AttributeUpdates DELETE operation with Value

In the DynamoDB API, UpdateItem's AttributeUpdates parameter (the older
syntax, which was superseded by UpdateExpression) has a DELETE operation
that can do two different things: It can delete an attribute, or it can
delete elements from a set. Before this patch we only implemented the
first feature, and this patch implements the second.

Note that unlike the ordinary delete, the second feature - set subtraction -
is a read-modify-write operation. This is not only because of Alternator's
serialization (as JSON strings, not CRDTs) - but also fundementally because
of the API's guarantees - e.g., the operation is supposed to fail if the
attribute's existing value is *not* a set of the correct type, so it
needs to read the old value.

The test for this feature begins to pass, so its "xfail" mark is
removed. After this, all tests in test/alternator/test_item.py pass :-)

Fixes #5864.

Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Message-Id: <20211103151206.157184-1-nyh@scylladb.com>

2021-11-23 08:51:06 +01:00

alternator

alternator: implement AttributeUpdates DELETE operation with Value

2021-11-23 08:51:06 +01:00

boost

cql: Fix missing data in indexed queries with base table short reads

2021-11-22 17:42:49 +02:00

cql

Revert "compression: define 'class' attribute for compression and deprecate 'sstable_compression'"

2021-07-28 14:14:22 +03:00

cql-pytest

test/cql-pytest: add virtual_tables.py