distributed-database

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

Enhancement

mysql> CREATE TABLE t1 (
    -> risk_id varchar(32) NOT NULL,
    -> tran_id int NOT NULL,
    -> KEY (`risk_id`)
    -> );

mysql> CREATE TABLE t2 (
    -> risk_id varchar(32) COLLATE utf8mb4_general_ci NOT NULL,
    -> -- risk_id varchar(32) NOT NULL,
    -> tran_id int NOT NULL,
    -> KEY (`risk_id`)
    -> );

mysql> explain select /*+ hash_join(t1) */ t1.ris

In a support escalation (https://github.com/cockroachlabs/support/issues/1709) for a v21.1 cluster, we saw that leaked gossip entries could impact foreground latency. The gossip leak itself has [since been fixed](cockroachdb/cockroach@d07b32db3e49e

Add missing assertions with assertGetValue and assertGetDefaultValue methods:

• PROXY_BACKEND_QUERY_FETCH_SIZE
• PROXY_FRONTEND_EXECUTOR_SIZE
• PROXY_BACKEND_EXECUTOR_SUITABLE
• PROXY_FRONTEND_MAX_CONNECTIONS
• PROXY_BACKEND_DRIVER_TYPE
• PROXY_MYSQL_DEFAULT_VERSION
• PROXY_DEFAULT_PORT
• PROXY_NETTY_BACKLOG

Our CMake build process produces tarball packages using the cpack TGZ target. This produces a server and client package with a file layout meant to match where the various artifacts go.

Meanwhile, the packages we include on the download page are a flat archive of various binaries produced by the build process. This include one regular package and one debug package with debug symbols for a few

Jira Link: DB-3084

Description

Currently, JWT aud claim is validated as below in io.jsonwebtoken.impl.DefaultJwtParser:

if (!expectedClaimValue.equals(actualClaimValue))

As requiredAudience is set as String, this equals comparison fails if aud claim contains multiple audiences in JWT token.

"aud": ["trino", "oauth2_client_id"]

Search before asking

• I had searched in the issues and found no similar issues.

Description

As title.

In BE, there are some many Substitute stringstream, we can replace them with fmt/format

Solution

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR

Use case:

Get the total duration over many events. Something like select sum(age(ended, started)) from myevents or select sum(ended - started) from myevents - depending on crate/crate#12479

See https://github.com/crate/crate/blob/dc3ce297b1597d482949a2e57479890feb3adbf4/server/src/main/java/io/crate/execution/engine/aggregation/impl/SumAggregation.java#L67

Real behavior (Required)

java.sql.SQLNonTransientConnectionException: Could not connect to address=(host=localhost)(port=9030)(type=master) : (conn=0) could not load system variables

	at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.createException(ExceptionFactory.java:73)
	at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.create(ExceptionFactory.java:197)

Describe the bug
Currently, we only update LSM/SST metrics when hummock service receives compaction task report in report_compact_task. If there is no alive compactor in the cluster, LSM/SST metrics won't be updated so these metrics are stale. For example, number/size of SSTs is stale so we will mistakenly think that our LSM tree is small.

To Reproduce
Follow the steps in #4365. Whe

Description

Currently, show tables is supported by CeresDB, it would be convenient to support name like syntax like in MySQL.

SHOW TABLES LIKE 'pattern'