Pete Stevenson

Signed-off-by: Pete Stevenson - Read the contribution guidelines - Include a reference to a related issue in this repository - A description of the changes proposed in the pull request

Summary: We upgrade the OTel proto version from `v0.10.0` to `v1.3.1`. Type of change: /kind feature Test Plan: Existing tests, sakffold'd standalone pem and ran export scripts saw data in...

`BLOB longer than INT_MAX bytes` 100s of MB of data from data frames.

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``` File [some-path/.venv/lib/python3.12/site-packages/mandala/storage_utils.py:140](http://localhost:8888/~/Repos/yfacrypto/.venv/lib/python3.12/site-packages/mandala/storage_utils.py#line=139), in SQLiteDictStorage.set(self, key, value, conn) 136 @transaction 137 def set( 138 self, key: str, value: Any, conn: Optional[sqlite3.Connection] = None 139 ) -> None: --> 140 conn.execute(...

[Feature]: Provide an example of exponential histogram.

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### Describe the solution you'd like: The examples include explicit bucket histogram but not exponential histogram. It's not clear if one needs to create a metric and then an aggregation,...

`head_object` or an async way to check if object exists in an S3 bucket.

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### Description Using `boto3`, one can check if an object exists in a bucket using method `head_object`, see, e.g.: [https://stackoverflow.com/questions/33842944/check-if-a-key-exists-in-a-bucket-in-s3-using-boto3](https://stackoverflow.com/questions/33842944/check-if-a-key-exists-in-a-bucket-in-s3-using-boto3) The `head_object` method does not appear to be implemented in...