Charles Connell

HBASE-28260: Add NO_WRITE_LOCAL flag to WAL file creation

10

Having all three replicas of each WAL file blocks be non-local to the RegionServer makes it less likely that failures of a co-located RegionServer and DataNode result in a corrupt...

enhancement(reduce transform): New setting for reduce transform: end_every_period_ms

2

I propose a new setting available for use on reduce transforms: `end_every_period_ms`. In my organization's use of vector, we are tailing Java log files to look for garbage collection events....

HBASE-28792: AsyncTableImpl should call coprocessor callbacks in a defined order

12

To call a coprocessor endpoint asynchronously, you start by calling `AsyncTable#coprocessorService()`, which gives you a `CoprocessorServiceBuilder`, and a few steps later you can talk to your coprocessor over the network....

HBASE-28770: Support partial results in AggregateImplementation and AsyncAggregationClient

6

Currently there is a gap in the coverage of HBase's quota-based workload throttling. Requests sent by `[Async]AggregationClient` reach `AggregateImplementation`. This then executes Scans in a way that bypasses the quota...

HBASE-28931: Reload SSL context regardless of changed file path

3

At my company we have an issue with our HBase servers not reloading TLS certificate files after they change on disk. We run our HMasters inside Kubernetes Pods, and define...

HBASE-29387: Reload quotas from hbase:quota table when changes are made

11

- New `ReloadQuotas` RPC supported by RegionServers - When a quota is modified, the HMaster sends this RPC to all RegionServers - When a RegionServer gets a `ReloadQuotasRequest`, it does...

HADOOP-18967: Allow no-downtime migration of HDFS clusters into secure mode

9

### Description of PR This PR adds two new boolean settings to DataNodes: - `dfs.datanode.block.access.token.unsafe.allowed-not-required` - `dfs.datanode.unsafe.sasl.allowed-not-required` With these two new settings, it is now possible for a Hadoop cluster...

Poor performance of cache invalidation on Graviton2 machines

12

### Describe the bug Invalidating instruction cache lines is unusually slow on Graviton2-based EC2 instances. This is detrimental to the JVM's performance. While this is ultimately a hardware problem, I...

HBASE-29682: Roll HMaster WAL in response to FlushMasterStoreRequest

5

I argue that in addition to flushing the master region, the `flushMasterStore()` RPC should also roll the WAL files being written by the HMaster. In clusters with small numbers of...