Java Good First Issues

java

Open

[Feature] Arrow Flight SQL: support Arrow IPC compression (LZ4/ZSTD) for DoGet responses

good first issuetype/feature-request

StarRocks/starrocks #73,876 opened May 26, 2026 · Java · 5,717 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

1 comment0 reactions1 assignee

Open

Blueprint for Porting Apache Airflow Breeze to Apache Sedona

attention neededbehavior changedocshelp wantedimprovementpre-commitpythonquestionrootsedona-docker

apache/sedona #2,993 opened May 23, 2026 · Scala · 1,953 stars

Why recommendedNo assignee yet · No comments yet

No assignee yetNo comments yetContributing guide available

0 comments0 reactions0 assignees

Open

client-policies: editing secure-redirect-uris-enforcer setting in admin ui breaks client policy/profile

area/admin/uihelp wantedkind/bugpriority/normalstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,252 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

3 comments2 reactions0 assignees

Open

NullPointerException in CertificateInfoHelper when "keyAlias" parameter is missing in multipart request. SAST

area/admin/apihelp wantedkind/bugpriority/lowstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,246 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment1 reaction0 assignees

Open

SSF: Client scopes ssf.read and ssf.manage not created when SSF enabled for existing realm

area/ssfhelp wantedkind/bugpriority/importantteam/core-iam

keycloak/keycloak #49,236 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

3 comments1 reaction0 assignees

Open

Refresh token reuse counter not reverted on transaction rollback, causing permanent session revocation on transient DB failures

area/corehelp wantedkind/bugpriority/normalstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,213 opened May 21, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

2 comments2 reactions0 assignees

Open

`remove_orphan_files` scopes `file_list_view` with raw string prefix matching

buggood first issue

apache/iceberg #16,493 opened May 20, 2026 · Java · 5,146 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

7 comments0 reactions0 assignees

Open

Remove deprecated methods for 1.12.0

good first issue

apache/iceberg #16,445 opened May 20, 2026 · Java · 5,146 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

3 comments0 reactions0 assignees

Open

[Feature][Zeta] Support resuming a force-stopped streaming job from the latest successful checkpoint

featurehelp wanted

apache/seatunnel #10,926 opened May 20, 2026 · Java · 6,897 stars

Why recommendedReview issue details before choosing

Review issue details before choosing

3 comments0 reactions1 assignee

Open

PR-I: Add dedicated knowledge sources

featurehelp wanted

apache/seatunnel #10,921 opened May 19, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet

No assignee yet

1 comment0 reactions0 assignees

Open

[Feature Request]: Add a native Logging transform to Java SDK

P2good first issuejavanew feature

apache/beam #38,528 opened May 18, 2026 · Java · 7,313 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

4 comments0 reactions2 assignees

Open

[Bug] [MySQL CDC] MySQL cdc start by time，TIMESTAMP startup mode cannot recover from checkpoints.

bughelp wanted

apache/seatunnel #10,899 opened May 18, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet

No assignee yet

6 comments0 reactions0 assignees

Open

Support SOCKS5 proxy for tri protocol in NettyConnectionClient

help wanted

apache/dubbo #16,276 opened May 18, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

2 comments0 reactions0 assignees

Open

BIP32: Incorrect seed bit-length validation for master key generation

Enhancementgood first issue

bitcoinj/bitcoinj #4,209 opened May 17, 2026 · Java · 4,687 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

2 comments0 reactions0 assignees

Open

Add size-bounded GC of the repo contents cache

P2help wantedteam-ExternalDepstype: feature request

bazelbuild/bazel #29,557 opened May 16, 2026 · Java · 25,384 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment0 reactions0 assignees

Open

[Umbrella][RAG] Define and implement production-grade Knowledge Sync for SeaTunnel

designfeaturehelp wanted

apache/seatunnel #10,889 opened May 15, 2026 · Java · 6,897 stars

Why recommendedReview issue details before choosing

Review issue details before choosing

3 comments2 reactions2 assignees

Open

[Bug]:Command Execution Fails on Windows with "Cannot run program 'sh'" Error

area/harnessbuggood first issuehelp wanted

agentscope-ai/agentscope-java #1,396 opened May 15, 2026 · Java · 3,253 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

7 comments0 reactions1 assignee

Open

:memo: Publish kyuubi-spark-authz Spark 4.0 binary to Maven Central

good first issuehelp wantedkind:documentation

apache/kyuubi #7,449 opened May 14, 2026 · Scala · 2,332 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

4 comments0 reactions0 assignees

Open

[Bug] Dubbo 3.3.2: FORCE_APPLICATION may leave one of multiple same-interface different-group consumer references with nacos-A(0) after startup when mapping is initially empty

help wanted

apache/dubbo #16,269 opened May 14, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment0 reactions0 assignees

Open

[Feature]: 升级 A2A SDK 至 v1.0 以支持稳定的AgentCard 和A2A协议

area/ext/integrationenhancementhelp wanted

agentscope-ai/agentscope-java #1,388 opened May 14, 2026 · Java · 3,253 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

7 comments0 reactions0 assignees

java

Open

[Feature] Arrow Flight SQL: support Arrow IPC compression (LZ4/ZSTD) for DoGet responses

good first issuetype/feature-request

StarRocks/starrocks #73,876 opened May 26, 2026 · Java · 5,717 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

1 comment0 reactions1 assignee

Open

Blueprint for Porting Apache Airflow Breeze to Apache Sedona

attention neededbehavior changedocshelp wantedimprovementpre-commitpythonquestionrootsedona-docker

apache/sedona #2,993 opened May 23, 2026 · Scala · 1,953 stars

Why recommendedNo assignee yet · No comments yet

No assignee yetNo comments yetContributing guide available

0 comments0 reactions0 assignees

Open

client-policies: editing secure-redirect-uris-enforcer setting in admin ui breaks client policy/profile

area/admin/uihelp wantedkind/bugpriority/normalstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,252 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

3 comments2 reactions0 assignees

Open

NullPointerException in CertificateInfoHelper when "keyAlias" parameter is missing in multipart request. SAST

area/admin/apihelp wantedkind/bugpriority/lowstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,246 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment1 reaction0 assignees

Open

SSF: Client scopes ssf.read and ssf.manage not created when SSF enabled for existing realm

area/ssfhelp wantedkind/bugpriority/importantteam/core-iam

keycloak/keycloak #49,236 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

3 comments1 reaction0 assignees

Open

Refresh token reuse counter not reverted on transaction rollback, causing permanent session revocation on transient DB failures

area/corehelp wantedkind/bugpriority/normalstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,213 opened May 21, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

2 comments2 reactions0 assignees

Open

`remove_orphan_files` scopes `file_list_view` with raw string prefix matching

buggood first issue

apache/iceberg #16,493 opened May 20, 2026 · Java · 5,146 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

7 comments0 reactions0 assignees

Open

Remove deprecated methods for 1.12.0

good first issue

apache/iceberg #16,445 opened May 20, 2026 · Java · 5,146 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

3 comments0 reactions0 assignees

Open

[Feature][Zeta] Support resuming a force-stopped streaming job from the latest successful checkpoint

featurehelp wanted

apache/seatunnel #10,926 opened May 20, 2026 · Java · 6,897 stars

Why recommendedReview issue details before choosing

Review issue details before choosing

3 comments0 reactions1 assignee

Open

PR-I: Add dedicated knowledge sources

featurehelp wanted

apache/seatunnel #10,921 opened May 19, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet

No assignee yet

1 comment0 reactions0 assignees

Open

[Feature Request]: Add a native Logging transform to Java SDK

P2good first issuejavanew feature

apache/beam #38,528 opened May 18, 2026 · Java · 7,313 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

4 comments0 reactions2 assignees

Open

[Bug] [MySQL CDC] MySQL cdc start by time，TIMESTAMP startup mode cannot recover from checkpoints.

bughelp wanted

apache/seatunnel #10,899 opened May 18, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet

No assignee yet

6 comments0 reactions0 assignees

Open

Support SOCKS5 proxy for tri protocol in NettyConnectionClient

help wanted

apache/dubbo #16,276 opened May 18, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

2 comments0 reactions0 assignees

Open

BIP32: Incorrect seed bit-length validation for master key generation

Enhancementgood first issue

bitcoinj/bitcoinj #4,209 opened May 17, 2026 · Java · 4,687 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

2 comments0 reactions0 assignees

Open

Add size-bounded GC of the repo contents cache

P2help wantedteam-ExternalDepstype: feature request

bazelbuild/bazel #29,557 opened May 16, 2026 · Java · 25,384 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment0 reactions0 assignees

Open

[Umbrella][RAG] Define and implement production-grade Knowledge Sync for SeaTunnel

designfeaturehelp wanted

apache/seatunnel #10,889 opened May 15, 2026 · Java · 6,897 stars

Why recommendedReview issue details before choosing

Review issue details before choosing

3 comments2 reactions2 assignees

Open

[Bug]:Command Execution Fails on Windows with "Cannot run program 'sh'" Error

area/harnessbuggood first issuehelp wanted

agentscope-ai/agentscope-java #1,396 opened May 15, 2026 · Java · 3,253 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

7 comments0 reactions1 assignee

Open

:memo: Publish kyuubi-spark-authz Spark 4.0 binary to Maven Central

good first issuehelp wantedkind:documentation

apache/kyuubi #7,449 opened May 14, 2026 · Scala · 2,332 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

4 comments0 reactions0 assignees

Open

[Bug] Dubbo 3.3.2: FORCE_APPLICATION may leave one of multiple same-interface different-group consumer references with nacos-A(0) after startup when mapping is initially empty

help wanted

apache/dubbo #16,269 opened May 14, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment0 reactions0 assignees

Open

[Feature]: 升级 A2A SDK 至 v1.0 以支持稳定的AgentCard 和A2A协议

area/ext/integrationenhancementhelp wanted

agentscope-ai/agentscope-java #1,388 opened May 14, 2026 · Java · 3,253 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

7 comments0 reactions0 assignees

java

Open

[Feature] Arrow Flight SQL: support Arrow IPC compression (LZ4/ZSTD) for DoGet responses

good first issuetype/feature-request

StarRocks/starrocks #73,876 opened May 26, 2026 · Java · 5,717 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

1 comment0 reactions1 assignee

Open

Blueprint for Porting Apache Airflow Breeze to Apache Sedona

attention neededbehavior changedocshelp wantedimprovementpre-commitpythonquestionrootsedona-docker

apache/sedona #2,993 opened May 23, 2026 · Scala · 1,953 stars

Why recommendedNo assignee yet · No comments yet

No assignee yetNo comments yetContributing guide available

0 comments0 reactions0 assignees

Open

client-policies: editing secure-redirect-uris-enforcer setting in admin ui breaks client policy/profile

area/admin/uihelp wantedkind/bugpriority/normalstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,252 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

3 comments2 reactions0 assignees

Open

NullPointerException in CertificateInfoHelper when "keyAlias" parameter is missing in multipart request. SAST

area/admin/apihelp wantedkind/bugpriority/lowstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,246 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment1 reaction0 assignees

Open

SSF: Client scopes ssf.read and ssf.manage not created when SSF enabled for existing realm

area/ssfhelp wantedkind/bugpriority/importantteam/core-iam

keycloak/keycloak #49,236 opened May 22, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

3 comments1 reaction0 assignees

Open

Refresh token reuse counter not reverted on transaction rollback, causing permanent session revocation on transient DB failures

area/corehelp wantedkind/bugpriority/normalstatus/auto-bumpstatus/auto-expireteam/core-protocolsteam/core-shared

keycloak/keycloak #49,213 opened May 21, 2026 · Java · 34,398 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

2 comments2 reactions0 assignees

Open

`remove_orphan_files` scopes `file_list_view` with raw string prefix matching

buggood first issue

apache/iceberg #16,493 opened May 20, 2026 · Java · 5,146 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

7 comments0 reactions0 assignees

Open

Remove deprecated methods for 1.12.0

good first issue

apache/iceberg #16,445 opened May 20, 2026 · Java · 5,146 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

3 comments0 reactions0 assignees

Open

[Feature][Zeta] Support resuming a force-stopped streaming job from the latest successful checkpoint

featurehelp wanted

apache/seatunnel #10,926 opened May 20, 2026 · Java · 6,897 stars

Why recommendedReview issue details before choosing

Review issue details before choosing

3 comments0 reactions1 assignee

Open

PR-I: Add dedicated knowledge sources

featurehelp wanted

apache/seatunnel #10,921 opened May 19, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet

No assignee yet

1 comment0 reactions0 assignees

Open

[Feature Request]: Add a native Logging transform to Java SDK

P2good first issuejavanew feature

apache/beam #38,528 opened May 18, 2026 · Java · 7,313 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

4 comments0 reactions2 assignees

Open

[Bug] [MySQL CDC] MySQL cdc start by time，TIMESTAMP startup mode cannot recover from checkpoints.

bughelp wanted

apache/seatunnel #10,899 opened May 18, 2026 · Java · 6,897 stars

Why recommendedNo assignee yet

No assignee yet

6 comments0 reactions0 assignees

Open

Support SOCKS5 proxy for tri protocol in NettyConnectionClient

help wanted

apache/dubbo #16,276 opened May 18, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

2 comments0 reactions0 assignees

Open

BIP32: Incorrect seed bit-length validation for master key generation

Enhancementgood first issue

bitcoinj/bitcoinj #4,209 opened May 17, 2026 · Java · 4,687 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

2 comments0 reactions0 assignees

Open

Add size-bounded GC of the repo contents cache

P2help wantedteam-ExternalDepstype: feature request

bazelbuild/bazel #29,557 opened May 16, 2026 · Java · 25,384 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment0 reactions0 assignees

Open

[Umbrella][RAG] Define and implement production-grade Knowledge Sync for SeaTunnel

designfeaturehelp wanted

apache/seatunnel #10,889 opened May 15, 2026 · Java · 6,897 stars

Why recommendedReview issue details before choosing

Review issue details before choosing

3 comments2 reactions2 assignees

Open

[Bug]:Command Execution Fails on Windows with "Cannot run program 'sh'" Error

area/harnessbuggood first issuehelp wanted

agentscope-ai/agentscope-java #1,396 opened May 15, 2026 · Java · 3,253 stars

Why recommendedMarked good first issue · Contributing guide available

Marked good first issueContributing guide available

7 comments0 reactions1 assignee

Open

:memo: Publish kyuubi-spark-authz Spark 4.0 binary to Maven Central

good first issuehelp wantedkind:documentation

apache/kyuubi #7,449 opened May 14, 2026 · Scala · 2,332 stars

Why recommendedNo assignee yet · Marked good first issue

No assignee yetMarked good first issueContributing guide available

4 comments0 reactions0 assignees

Open

[Bug] Dubbo 3.3.2: FORCE_APPLICATION may leave one of multiple same-interface different-group consumer references with nacos-A(0) after startup when mapping is initially empty

help wanted

apache/dubbo #16,269 opened May 14, 2026 · Java · 41,524 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

1 comment0 reactions0 assignees

Open

[Feature]: 升级 A2A SDK 至 v1.0 以支持稳定的AgentCard 和A2A协议

area/ext/integrationenhancementhelp wanted

agentscope-ai/agentscope-java #1,388 opened May 14, 2026 · Java · 3,253 stars

Why recommendedNo assignee yet · Contributing guide available

No assignee yetContributing guide available

7 comments0 reactions0 assignees

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Java Good First Issues