Azure/azure-functions-java-worker

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Java runtime and core types for Microsoft Azure Functions

Stars: 103
Forks: 74
Open beginner issues: 0
Indexed issues: 79
Avg merge: 1d 11h
Merged PRs (30d): 3

Dominant language: Java
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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79 open issues indexed

[Feature] Support raw Kafka record (KafkaRecord) binding with Protobuf deserialization Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

Azure/azure-functions-java-worker#868 · Opened Apr 24, 2026
[Feature] Support for reverse propagation of request telemetry tags Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Azure/azure-functions-java-worker#867 · Opened Apr 22, 2026
[Feature] Support OpenTelemetry Baggage Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Azure/azure-functions-java-worker#866 · Opened Apr 22, 2026
[MCP Tool] Implement ability to specify input schema on tools Open

mcp-extension

Difficulty 5/5 Over a week Newbie friendliness 25/100

Azure/azure-functions-java-worker#865 · Opened Apr 21, 2026
Add advanced MCP tool samples Open

mcp-extension

Azure/azure-functions-java-worker#863 · 1 assignee · Opened Apr 8, 2026
Add MCP (Model Context Protocol) resource samples Open

mcp-extension

Azure/azure-functions-java-worker#862 · 1 assignee · Opened Apr 8, 2026
[MCP Prompt] Implement support for MCP prompts Open

mcp-extension

Azure/azure-functions-java-worker#861 · 1 assignee · Opened Apr 2, 2026
[MCP Resource] Add resource binding template Open

mcp-extension

Azure/azure-functions-java-worker#859 · 1 comment · 1 assignee · Opened Feb 24, 2026
[MCP Tool] Implement ability to specify outputSchema on tools Open

mcp-extension

Azure/azure-functions-java-worker#858 · 1 assignee · Opened Feb 17, 2026
[MCP Tool] Implement support for structured content Open

mcp-extension

Azure/azure-functions-java-worker#857 · 1 comment · 1 assignee · Opened Feb 17, 2026
Azure function app trace and log context propagation not happening in OTEL auto instrumentation Open

area:java-functions

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Azure/azure-functions-java-worker#834 · Opened Aug 2, 2025
Safer - Compatible Updates to Fix Vulnerable Dependencies Open

area:java-functions

Difficulty 4/5 3-5 days Newbie friendliness 15/100

Azure/azure-functions-java-worker#830 · Opened Jul 16, 2025
[BUG] Duplicated field "client" in BlockBlobClient, raises gson IllegalArgumentException Open

area:java-functions

Azure/azure-functions-java-worker#827 · 1 comment · 1 assignee · Opened Jul 10, 2025
Upgrading GSON version from 2.9.0 to 2.11.0 Open

area:java-functions

Azure/azure-functions-java-worker#817 · 1 assignee · Opened Apr 7, 2025
Implement `Closeable` in `FunctionInstanceInjector` interface and call `close` on JVM shutdown Open

area:java-functions

Azure/azure-functions-java-worker#812 · 4 comments · 1 assignee · Opened Feb 18, 2025
Support for sending back multiple headers of the same name Open

area:java-functions Enhancement pending release

Azure/azure-functions-java-worker#788 · 1 assignee · Opened Sep 28, 2024
Unexpected JDK warning message: OpenJDK 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likely be removed in a future release. Open

area:java-functions Enhancement pending release

Azure/azure-functions-java-worker#782 · 1 assignee · Opened Aug 14, 2024
Http Requests with Transfer-Encoding: chunked report an empty body Open

area:java-functions feature request

Azure/azure-functions-java-worker#781 · 6 comments · 1 assignee · Opened Aug 6, 2024
Application insights for Azure Function on Kubernetes Open

area:java-functions

Azure/azure-functions-java-worker#744 · 1 assignee · Opened Nov 14, 2023
Support for Record deserialization by upgrading GSON Open

area:java-functions dependencies gson needs-discussion reviewed

Azure/azure-functions-java-worker#739 · 2 comments · 1 reaction · 1 assignee · Opened Oct 13, 2023
Add support for application/x-protobuf content type Open

area:java-functions needs-investigation New Feature reviewed

Azure/azure-functions-java-worker#738 · 1 assignee · Opened Oct 13, 2023
Support configuring log levels/sampling overrides with java app insights agent Open

needs-discussion needs-investigation reviewed

Difficulty 5/5 Over a week Newbie friendliness 30/100

Azure/azure-functions-java-worker#731 · 4 comments · Opened Oct 5, 2023
gracefull shutdown support for Java functions Open

area:java-functions Enhancement needs-discussion New Feature reviewed

Difficulty 5/5 Over a week Newbie friendliness 25/100

Azure/azure-functions-java-worker#729 · Opened Sep 21, 2023
Update java language worker to remove old command line arguments once core tools is released Open

area:java-functions Enhancement needs-discussion

Azure/azure-functions-java-worker#727 · 1 assignee · Opened Sep 14, 2023
Create documentation that describes how to troubleshoot and fix `'0 functions loaded'` Open

area:java-functions Documentation reviewed supportability

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Azure/azure-functions-java-worker#725 · Opened Sep 11, 2023
OutputBinding not compatible with com.azure.core.models.CloudEvent Open

area:java-functions Enhancement Needs: Triage (Functions) New Feature reviewed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Azure/azure-functions-java-worker#720 · Opened Jul 20, 2023
Add Java support for Azure SQL trigger for Functions Open

area:java-functions Needs: Triage (Functions) reviewed

Difficulty 5/5 Over a week Newbie friendliness 25/100

Azure/azure-functions-java-worker#716 · Opened Jun 16, 2023
Add support for LocalDate (or OffsetDateTime, etc.) in HttpRequestMessage<Optional<T>> in Functions with Spring Cloud Open

area:java-functions Enhancement needs-discussion Needs: Triage (Functions) reviewed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Azure/azure-functions-java-worker#709 · 2 comments · Opened Mar 16, 2023
Add spring cloud function samples and docs for different triggers and bindings. Open

area:java-functions Documentation Needs: Triage (Functions) reviewed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Azure/azure-functions-java-worker#706 · Opened Feb 23, 2023
Unstable work of function app on some periods Open

area:java-functions Bug Needs: Attention :wave: Needs: Triage (Functions)

Azure/azure-functions-java-worker#696 · 15 comments · 1 assignee · Opened Dec 21, 2022
Empty string cannot be passed in HttpTrigger query string Open

area:java-functions Break Change Enhancement needs-discussion New Feature reviewed

Azure/azure-functions-java-worker#683 · 1 assignee · Opened Nov 28, 2022
Feature Request/Improvement - Add Gson type adapter for java.time.Instant Open

area:java-functions Needs: Triage (Functions) New Feature reviewed

Azure/azure-functions-java-worker#682 · 1 comment · 1 assignee · Opened Nov 25, 2022
Application of logging severity is inconsistent with documentation Open

area:java-functions Bug Documentation reviewed

Azure/azure-functions-java-worker#674 · 1 comment · 1 assignee · Opened Nov 1, 2022
Send IncludeEmptyEntriesInMessagePayload capability to host to get empty entries in payload Open

area:java-functions Enhancement New Feature reviewed

Azure/azure-functions-java-worker#671 · 1 assignee · Opened Oct 17, 2022
Remove the catch all logics for azure-functions-java-library for cold start improvement Open

area:java-functions Enhancement Needs: Triage (Functions) reviewed V5

Azure/azure-functions-java-worker#661 · 1 comment · 1 assignee · Opened Sep 26, 2022
Download latest App insights agent directly using pipeline Open

area:java-functions Enhancement reviewed

Azure/azure-functions-java-worker#657 · 1 assignee · Opened Sep 22, 2022
Java version check in Windows section of pipeline points to default version Open

area:java-functions Bug reviewed

Azure/azure-functions-java-worker#650 · 1 assignee · Opened Sep 16, 2022
reorder arguments resolving logics to full support middleware - V5 - breaking change. Open

Enhancement Needs: Triage (Functions) reviewed V5

Azure/azure-functions-java-worker#648 · 1 assignee · Opened Sep 15, 2022
Eventhub Binary message not respect Open

area:java-functions Bug reviewed

Azure/azure-functions-java-worker#644 · 1 assignee · Opened Sep 9, 2022
Avoid reading from DISK during cold start specialization Open

area:java-functions Enhancement reviewed

Azure/azure-functions-java-worker#637 · 1 comment · 1 assignee · Opened Aug 30, 2022
Should Java worker load cx code at worker start up? Open

area:java-functions Enhancement reviewed

Azure/azure-functions-java-worker#635 · 1 assignee · Opened Aug 25, 2022
Handle FunctionsMetadataRequest and FunctionsMetadataResponse in Java worker Open

area:java-functions Bug needs-investigation reviewed

Azure/azure-functions-java-worker#633 · 1 assignee · Opened Aug 19, 2022
"invoked by Java Worker" is seen as "Function.My_Function.User" log instead "Function.My_Function" Open

area:java-functions Break Change reviewed V5

Azure/azure-functions-java-worker#612 · 1 comment · 1 assignee · Opened Aug 12, 2022
adding unit tests and integration tests Open

area:java-functions Enhancement reviewed

Azure/azure-functions-java-worker#601 · 3 assignees · Opened Jul 22, 2022
Java worker doesn't respect module info defined on cx code Open

area:java-functions Needs: Triage (Functions) New Feature reviewed

Azure/azure-functions-java-worker#580 · 1 comment · 1 assignee · Opened Jun 6, 2022
Service Bus OutputBinding doesn't support ServiceBusMessage type with Metadata Open

area:java-functions Bug needs-investigation Needs: Triage (Functions)

Azure/azure-functions-java-worker#570 · 2 comments · 6 reactions · 1 assignee · Opened May 9, 2022
Should use getDeclaredMethods instead of getMethods Open

area:java-functions Enhancement needs-investigation Needs: Triage (Functions) reviewed

Azure/azure-functions-java-worker#522 · 1 assignee · Opened Feb 3, 2022
[BUG] Java class DnsContextFactory could not be found the DNS on Azure function service. Open

area:java-functions Bug needs-discussion needs-investigation Needs: Triage (Functions) reviewed

Azure/azure-functions-java-worker#496 · 2 comments · 1 assignee · Opened Dec 8, 2021
Binding Blob container to Blob output trigger Open

area:java-functions Enhancement needs-investigation Needs: Triage (Functions) New Feature reviewed

Azure/azure-functions-java-worker#478 · 1 assignee · Opened Oct 22, 2021
ServiceBusTopicOutput should not require "subscriptionName" Open

Enhancement reviewed

Azure/azure-functions-java-worker#464 · 1 comment · 1 reaction · 1 assignee · Opened Sep 27, 2021

Azure/azure-functions-java-worker

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