Search results

[jdbc-v2] DataLakeCatalog is not present in getSchemas() result

area:jdbc-metadataissue handling metadata things like getting type of columnissue handling metadata things like getting type of column

bug

jdbc-v2jdbc-v2 issuesjdbc-v2 issues

Status: Open.

#2907 In ClickHouse/clickhouse-java;

· chernser opened on Jul 2, 2026

·  

0.11.0

org.apache.hc.core5.http.TruncatedChunkException:Truncated chunk

area:networknetwork and IO related issuesnetwork and IO related issues

investigatingInvestigation of a root cause is on goingInvestigation of a root cause is on going

Status: Open.

#2904 In ClickHouse/clickhouse-java;

· nanjing922 opened on Jun 30, 2026

int-returning varint readers silently corrupt overflowing values

bug

client-api-v2

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

Status: Open.

#2902 In ClickHouse/clickhouse-java;

· romka opened on Jun 29, 2026

[client-v2] readVariant discards the active type discriminant — colliding Variant alternatives are indistinguishable

area:data-typedata type processing issuesdata type processing issues

bug

client-api-v2

Status: Open.

#2901 In ClickHouse/clickhouse-java;

· claude opened on Jun 28, 2026

client-v2: Array(Date)/Array(String)/Map query parameters emitted unquoted -> server 400 (CANNOT_PARSE_INPUT_ASSERTION_FAILED)

Status: Open.

#2897 In ClickHouse/clickhouse-java;

· polyglotAI-bot opened on Jun 26, 2026

[jdbc-v2] Backtick-quoted (Nested) INSERT column names are not unescaped before schema lookup in WriterStatementImpl

Status: Open.

#2896 In ClickHouse/clickhouse-java;

· claude opened on Jun 26, 2026

client-v1 (clickhouse-data): "Duplicate key" IllegalStateException on result sets with duplicate column names (0.9.8)

bug

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

wontfix

Status: Open.

#2895 In ClickHouse/clickhouse-java;

· den-crane opened on Jun 25, 2026

[jdbc-v2,client-v2] Configuration in migration guide should be clear

area:docsDocumentation missingDocumentation missing

jdbc

jdbc-v2jdbc-v2 issuesjdbc-v2 issues

Status: Open.

Task

#2892 In ClickHouse/clickhouse-java;

· chernser opened on Jun 24, 2026

·  

0.10.0

Document usage of JSONEachrow reader

area:docsDocumentation missingDocumentation missing

client-api-v2

Status: Open.

Task

#2890 In ClickHouse/clickhouse-java;

· chernser opened on Jun 24, 2026

·  

0.10.0

How Do I Specify a Negotiated Cipher Suite for ClickHouse 0.65?

area:docsDocumentation missingDocumentation missing

area:networknetwork and IO related issuesnetwork and IO related issues

client-api-v2

enhancement

Status: Open.

#2882 In ClickHouse/clickhouse-java;

· perfectyc2201 opened on Jun 18, 2026

·  

0.11.0

DateTime('Fixed/UTC±HH:MM:SS') timezone silently dropped — wall-clock shifted to UTC

Status: Open.

#2876 In ClickHouse/clickhouse-java;

· claude opened on Jun 15, 2026

·  

0.11.0

[r2dbc] getRowsUpdated() returns 0 for successful INSERT…SELECT — needs reliable written_rows

Status: Open.

#2860 In ClickHouse/clickhouse-java;

· thiagohora opened on May 26, 2026