distributed-systems

What happened?

In a Jepsen test run of five etcd 3.5.3 nodes, with process pauses (sending processes SIGSTOP and SIGCONT), compaction (performed via the admin API), and defragmentation (via etcdctl), one etcd process crashed with the following error message:

{"level":"panic","ts":"2022-06-13T14:11:27.870Z","caller":"etcdserver/apply.go:638","msg":"unexpected error during txn","error

Currently many more Python projects like dask and optuna are using Python type hints. With the Python package of xgboost gaining more and more features, we should also adopt mypy as a safe guard against some type errors and for better code documentation.

ActorAdapter will ignore null message with "Adapter function returned null which is not valid as an .."

However, this seems not be documented. For instance, scaladoc/javadoc of pipeToSelf could mention it as well as any other place where adapters are used.

Let's support at least reading "b3" header from a single string, most commonly traceid-spanid-1
It would also be nice to support optionally writing this, especially in message providers or others with constrained environments.

Expected behavior

As discussed on openzipkin/b3-propagation#21 and first implemented here: https://github.com/openzipkin/brave/blob/master/brave/src/main/java/bra

Is your feature request related to a problem? Please describe.

I'd like to be able to debug cadence's space usage by breaking down the size of history events by workflow type. But currently I cannot.

Proposed Solution

Proposed by @longquanzheng in the cadence slack: track a historySize in ES so we can query it for aggregation.

Additional context

https://uber-cadence.sl

We can just disable the pushdown on json column in MongoDB connector. TestMongoTypeMapping needs a new test method for json type when fixing this issue.

CREATE TABLE test (c1 json);
INSERT INTO test VALUES (json '{"id":0,"name":"user_0"}');

SELECT * FROM test WHERE c1 = json '{"id":0,"name":"user_0"}';
java.lang.UnsupportedOperationException
	at io.trino.spi.predicate.ValueSet.

In working on informalsystems/tendermint-rs#1144, I see that the statesync.fetchers configuration option is serialized as a string. Does it need to be a string? It seems like it should be an integer value.

Need to fix this TODO in the code:

         // TODO: we need to consider adding execution time to mutable state
	// For now execution time will be calculated based on start time and cron schedule/retry policy
	// each time DescribeWorkflowExecution is called.

https://github.com/temporalio/temporal/blob/master/service/history/historyEngine.go#L1184

Describe the bug
For non empty MultiMap I'm always seeing 0 B for Entry memory and Backup memory

For Map I'm receiving the non-zero values.
Here's the MultiMap config:

<multimap name="default">
    <backup-count>1</backup-count>
    <async-backup-count>0</async-backu

We are using font-awesome V4 and should migrate to font-awesome V5 which comes with its own vue.js module: https://github.com/FortAwesome/vue-fontawesome

Migration includes removing old font-awesome V4 module and changing all existing icons to new vue.js tag.

This is blocked until #114 is merged which comes with first initial integration.