Cassandra 查询失败，出现“com.datastax.driver.core.exceptions.InvalidQueryException:字符串未验证。”

我创建了一个如下表：

CREATE TABLE messages (
stream int,
sequence int,
timestamp bigint,
message blob,
PRIMARY KEY (stream, sequence)
) WITH gc_grace_seconds = 0;

在CQLSH中运行以下查询效果非常好：

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从消息中选择*，其中stream=1，sequence>=1，sequence是否尝试添加；在查询结束时，请执行以下操作：

public final String FETCH_CQL = "select stream, sequence, timestamp, message "
            + "from messages where stream = ? and sequence >= ? and sequence <= ?**;**";

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将stream和sequence字段定义为类型UUID

Try PreparedStatement，我在答案中添加了示例代码。问题与使用int作为键和搜索条件的一部分有关。我已将此字段更改为“文本”，现在一切正常。这让人想起旧的Cassandra 1.x错误，由于节俭限制，使用非UTF8键插入失败。我猜这是密切相关的。

public final String FETCH_CQL = "select stream, sequence, timestamp, message "
            + "from messages where stream = ? and sequence >= ? and sequence <= ?";

session.execute(FETCH_CQL, Integer.parseInt(stream), Integer.parseInt(fromSequence), Integer.parseInt(toSequence));

public final String FETCH_CQL = "select stream, sequence, timestamp, message "
            + "from messages where stream = ? and sequence >= ? and sequence <= ?**;**";

PreparedStatement FETCH_PS = session.prepare(FETCH_CQL);
BoundStatement boundStatement = FETCH_PS.bind(Integer.parseInt(stream), Integer.parseInt(fromSequence), Integer.parseInt(toSequence));
session.execute(boundStatement);