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https://issues.apache.org/jira/browse/CASSANDRA-20979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18030620#comment-18030620
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Lukasz Antoniak commented on CASSANDRA-20979:
---------------------------------------------
I think C* first supported vectors of numeric (fixed-length) types, but then it
was extended to any sub-type. In drivers, we also implemented support for
literally any vector sub-type (e.g. vector of blobs) -
[JAVA-3143|https://datastax-oss.atlassian.net/browse/JAVA-3143]. FWIW those
changes test also vectors of text:
[CASSANDRA-18613|https://issues.apache.org/jira/browse/CASSANDRA-18613]
(https://github.com/apache/cassandra/commit/ddbc52990f90473db729e96f22d2914e51a957a6).
I agree that support for it is completely debatable, but currently it is fair
to say that C* supports all vector subtypes.
{code:java}
cqlsh:test> create table vector_text_list(x int primary key, y
vector<list<text>, 2>);
cqlsh:test> insert into vector_text_list(x, y) values(1, [['hello', 'world'],
['a', 'b', 'c']]);
cqlsh:test>
{code}
> CQLSSTableWriter fails to serialize vector of date and time
> -----------------------------------------------------------
>
> Key: CASSANDRA-20979
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20979
> Project: Apache Cassandra
> Issue Type: Bug
> Reporter: Lukasz Antoniak
> Assignee: Lukasz Antoniak
> Priority: Low
>
> C* 5.x technically allows to create schema of vectors of variable types, e.g.
> non-numeric. {{CQLSSTableWriter}} fails to serialize vectors of dates and
> time.
> Stack trace:
> {code:java}
> org.apache.cassandra.exceptions.InvalidRequestException: Expected 4 byte long
> for date (0)
> at
> org.apache.cassandra.cql3.statements.RequestValidations.invalidRequest(RequestValidations.java:358)
> at
> org.apache.cassandra.cql3.terms.MultiElements$Value.fromSerialized(MultiElements.java:73)
> at org.apache.cassandra.cql3.terms.Marker.bind(Marker.java:85)
> at
> org.apache.cassandra.cql3.terms.Term$NonTerminal.bindAndGet(Term.java:304)
> at
> org.apache.cassandra.cql3.terms.Constants$Setter.execute(Constants.java:482)
> at
> org.apache.cassandra.cql3.statements.UpdateStatement.addUpdateForKey(UpdateStatement.java:126)
> at
> org.apache.cassandra.io.sstable.CQLSSTableWriter.rawAddRow(CQLSSTableWriter.java:311)
> at
> org.apache.cassandra.io.sstable.CQLSSTableWriter.addRow(CQLSSTableWriter.java:212)
> at
> org.apache.cassandra.io.sstable.CQLSSTableWriter.addRow(CQLSSTableWriter.java:182)
> {code}
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