clickhouse-java

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[client-v2] Explore Migrate of Kafka Connector to use client-v2

1

# Description We need to estimate the effort of migrating Kafka connector to the new client API. This issue is mainly about building a holistic view of a future work....

Paultagoras

addBatch method cause Java heap memory char array grows too fast

9

 The scenario involves a large number of calls to the addBatch method, Then use jmap to view heap memory，has lots of char[],although they are all unreachable objects that can...

wangbing505

JDBC driver prints stack trace to stdout

2

### Describe the bug On some exceptions the JDBC driver prints a whole stack trace to stdout here: https://github.com/ClickHouse/clickhouse-java/blob/main/clickhouse-client/src/main/java/com/clickhouse/client/ClickHouseClient.java#L963 This can mess up structured logging output for an application that...

jjtt

[client-v2] fixed number conversion in reader

1

## Summary This PR make it possible to read columns into wider type. It is not possible with current implementation. Examples - column of `int8` can be read as `Byte`,...

chernser

[client-v2] Fix Bitmap SerDe

1

## Summary ## Checklist Delete items not relevant to your PR: - [x] Unit and integration tests covering the common scenarios were added - [ ] A human-readable description of...

chernser

[client-v2][discussion] Load-balancing on the client side.

4

### Topic Client-v2 implementation may connect to a single target host today. Client uses Apache HTTP client which has built-in connection pool. This set of properties is enough to handle...

chernser

[client-v2] Incorrect read of server error when server response is compressed

2

When compression is on (default case) and error happens - it is read from a raw stream, but should be wrapped with LZ4 Input Stream. ### Steps to reproduce 1....

chernser

[client-v2] Make compression dependencies as required

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## Summary Client uses compression by default, but related library dependencies are optional. It causes confusion because users have to add extra dependencies while library cannot work without it without...

chernser

Batch Insert r2dbc

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Looks like bulk inserts are inserting 1 by 1 and not in batches. I have created the following table: ``` CREATE TABLE IF NOT EXISTS test ( `a` Int16, `b`...

javiercj93

How can rows_before_limit be extracted from an HTTP response?

5

Hello, I've got a problem after upgrading from 0.3.1-patch to the latest version. After I get a response by running ```statement.unwrap(ClickHouseRequest.class).query(query).executeAndWait()``` , I can't extract `rows_before_limit` from it. As far...

estaine