Release v7.2.1

[github-actions]

Proposed Release Notes

• Dev-only sub-dependency bump of 'y18n' to clear npm audit warnings.

• Bumped @grpc/grpc-js to ^1.2.11.

• Bumped @grpc/proto-loader to ^0.5.6.

• Agent no longer propagates segments for promises via async-hooks when the transaction associated with the parentSegment has ended.

  This change reduces the amount of context tracking work needed for certain rare edge-case scenarios involving promises.

• Fixed issue where capturing axios request errors could result in a memory leak.

  The agent now clears error references on transaction end, which are not used for later processing. Errors returned from 'axios' requests contain a reference to the request object which deeper down has a handle to a promise in handleRequestError. The TraceSegment associated with that promise has a handle to the transaction, which through the error capture ultimately kept the promise in memory and prevented it from being destroyed to free-up the TraceSegment from the segment map. This change also has the benefit of freeing up some memory early for transactions held onto for transaction traces.

• Added active transaction check to wrappedResEnd to prevent unecessary work for ended transactions in the case of multiple Response.prototype.end() invocations.

Links

• PR: Bumps dev sup-dep to get rid of npm audit warning. #721
• PR: Bump grpc js dependencies #720
• PR: Adds active transaction check for parentSegment to promise tracking #718
• PR: Clears error collections on transaction end after processing. #712

Details

[carlo-808]