a/b/c/d/ where `a/b/c/` exists results in additional syscalls
such as an Lstat() call to verify if the `a/b/c/` exists
and its a directory.
We do not need to do this on MinIO since the parent prefixes
if exist, we can simply return success without spending
additional syscalls.
Also this implementation attempts to simply use Access() calls
to avoid os.Stat() calls since the latter does memory allocation
for things we do not need to use.
Access() is simpler since we have a predictable structure on
the backend and we know exactly how our path structures are.
A huge number of goroutines would build up from various monitors
When creating test filesystems provide a context so they can shut down when no longer needed.
Do completely independent multipart uploads.
In distributed mode, a lock was held to merge each multipart
upload as it was added. This lock was highly contested and
retries are expensive (timewise) in distributed mode.
Instead, each part adds its metadata information uniquely.
This eliminates the per object lock required for each to merge.
The metadata is read back and merged by "CompleteMultipartUpload"
without locks when constructing final object.
Co-authored-by: Harshavardhana <harsha@minio.io>
This commit adds a `context.Context` to the
the KMS `{Stat, CreateKey, GenerateKey}` API
calls.
The context will be used to terminate external calls
as soon as the client requests gets canceled.
A follow-up PR will add a `context.Context` to
the remaining `DecryptKey` API call.
Signed-off-by: Andreas Auernhammer <hi@aead.dev>
Uploading a part object can leave an inconsistent state inside
.minio.sys/multipart where data are uploaded but xl.meta is not
committed yet.
Do not list upload-ids that have this state in the multipart listing.
The default replica value is 16 (right now) which can lead to massive
resource consumption on one node in smaller clusters. The idea for this
addition is to allow users to specify how the pods (replicas) are being
spread across the cluster. It gives more control over this Helm Release
in smaller clusters where most worker nodes have taints.
As this Kubernetes feature exists since Kubernetes 1.19 and is only
useful for a replica count > 1, this was taken into account.
Since this is a MinIO specific extension in the replication config,
default this to Disabled to allow other sdks to be used to configure
replication rules.
Co-authored-by: Poorna Krishnamoorthy <poorna@minio.io>
