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docs: update Alternator's compatibility.md

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In the last year, four new features were added to DynamoDB which we
don't yet support - Kinesis Streams, PartiQL, Contributor Insights and
Export to S3. Let's document them as missing Alternator features, and
point to the four newly-created issues about these features.

Refs #8786
Refs #8787
Refs #8788
Refs #8789

Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Message-Id: <20210603125825.1179171-1-nyh@scylladb.com>
This commit is contained in:
Nadav Har'El
2021-06-03 15:58:25 +03:00
committed by Avi Kivity
parent 872cd8f692
commit fe1fa9d72b
1 changed files with 25 additions and 0 deletions
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@@ -153,6 +153,12 @@ they should be easy to detect. Here is a list of these unimplemented features:
https://github.com/scylladb/scylla/issues/6930
https://github.com/scylladb/scylla/issues/6918
* Recently DynamoDB added support, in addition to the DynamoDB Streams API,
also for the similar Kinesis Streams. Alternator doesn't support this yet,
and the related operations DescribeKinesisStreamingDestination,
DisableKinesisStreamingDestination, and EnableKinesisStreamingDestination.
https://github.com/scylladb/scylla/issues/8786
* The on-demand backup APIs are not supported: CreateBackup, DescribeBackup,
DeleteBackup, ListBackups, RestoreTableFromBackup.
For now, users can use Scylla's existing backup solutions such as snapshots
@@ -186,3 +192,22 @@ they should be easy to detect. Here is a list of these unimplemented features:
https://github.com/scylladb/scylla/issues/5026
https://github.com/scylladb/scylla/issues/7550
https://github.com/scylladb/scylla/issues/7551
* The recently-added PartiQL syntax (SQL-like SELECT/UPDATE/INSERT/DELETE
expressions) and the new operations ExecuteStatement, BatchExecuteStatement
and ExecuteTransaction is not yet supported.
A user that is interested in an SQL-like syntax can consider using Scylla's
CQL protocol instead.
https://github.com/scylladb/scylla/issues/8787
* As mentioned above, Alternator has its own powerful monitoring framework,
which is different from AWS's. In particular, the operations
DescribeContributorInsights, ListContributorInsights and
UpdateContributorInsights that configure Amazon's "CloudWatch Contributor
Insights" are not yet supported. Scylla has different ways to retrieve the
same information, such as which items were accessed most often.
https://github.com/scylladb/scylla/issues/8788
* Alternator does not support the new DynamoDB feature "export to S3",
and its operations DescribeExport, ExportTableToPointInTime, ListExports.
https://github.com/scylladb/scylla/issues/8789