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[client-v2] ClickHouseLZ4InputStream "Incomplete read" error drops the byte counts (MessageFormat placeholders passed to a String.format wrapper)

area:networknetwork and IO related issuesnetwork and IO related issues

bug

client-api-v2

Status: Open.

#3108 In ClickHouse/clickhouse-java;

· polyglotAI-bot opened on Sep 8, 2026

[client-v1] Every compressed read fails on ClickHouse 26.9+: Lz4InputStream hardcodes the LZ4 magic byte but the server default codec is now ZSTD

area:networknetwork and IO related issuesnetwork and IO related issues

bug

client-v1issues applicable only for an old clientissues applicable only for an old client

Status: Open.

#3107 In ClickHouse/clickhouse-java;

· polyglotAI-bot opened on Sep 8, 2026

[client-v2] Every compressed read fails on ClickHouse 26.9+: response reader is hardcoded to LZ4 but the server default codec is now ZSTD(3)

Status: Open.

#3105 In ClickHouse/clickhouse-java;

· Marais opened on Sep 8, 2026

JDBC v2: SQLException.getSQLState() returns 22000 (Data Exception) for all server errors, including UNKNOWN_TABLE

bug

Status: Open.

#3104 In ClickHouse/clickhouse-java;

· aalopatin opened on Sep 8, 2026

JWT example and documentation

Status: Open.

#3100 In ClickHouse/clickhouse-java;

· chernser opened on Sep 4, 2026

·  

0.11.0

[client-v2] ClickHouseColumn mis-parses a Tuple whose JSON element is not last: later elements are swallowed as JSON parameters

area:data-typedata type processing issuesdata type processing issues

bug

Status: Open.

#3098 In ClickHouse/clickhouse-java;

· Marais opened on Sep 3, 2026

·  

0.11.0

client-v2 0.10.0: getTableSchema fails on ClickHouse 26.8 with "Failed to parse column null defined by type 'null'" (works on 26.7)

bug

client-api-v2

jdbc-v2jdbc-v2 issuesjdbc-v2 issues

Status: Open.

#3094 In ClickHouse/clickhouse-java;

· indigo423 opened on Sep 1, 2026

·  

0.10.1

socket_keepalive doesn't work with shaded clickhouse-jdbc

bug

Status: Open.

#3092 In ClickHouse/clickhouse-java;

· ostinru opened on Sep 1, 2026

·  

0.11.0

[client-v2] getTableSchema and insert concatenate the raw table name into SQL — names needing backquotes cannot be used

Status: Open.

#3089 In ClickHouse/clickhouse-java;

· Marais opened on Aug 31, 2026

·  

0.11.0

client-v2: geo columns (Point/Ring/Polygon/...) are misread in the Native format

area:data-typedata type processing issuesdata type processing issues

bug

client-api-v2

Status: Open.

#3088 In ClickHouse/clickhouse-java;

· polyglotAI-bot opened on Aug 31, 2026

·  

0.11.0

[docs] Update regarding priority of X-ClickHouse-Format header

Status: Open.

#3086 In ClickHouse/clickhouse-java;

· chernser opened on Aug 27, 2026

·  

0.11.0

jdbc-v2: an INSERT VALUES list holding a literal is routed to the beta RowBinary writer, which silently shifts the bound values

area:jdbc-inserthandling data inserthandling data insert

area:sql-parser

bug

jdbc-v2jdbc-v2 issuesjdbc-v2 issues

Status: Open.

#3083 In ClickHouse/clickhouse-java;

· polyglotAI-bot opened on Aug 26, 2026

·  

0.11.0