The WALFlushInterval is not used anywhere in the code base.
The WAL is not an interface anymore to save some lookup time so can't use NopWAL in the tests. Instead can just pass nil as the code checks for that and it is essentially a noop.
Signed-off-by: Krasi Georgiev <kgeorgie@redhat.com>
* Fix filehandling for windows
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
* Fix more windows filehandling issues
Windows: Close files before deleting Checkpoints.
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
Windows: Close writers in case of errors so they can be deleted
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
Windows: Close block so that it can be deleted.
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
Windows: Close file to delete it
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
Windows: Close dir so that it can be deleted.
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
Windows: close files so that they can be deleted.
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
* Review feedback
Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
This reverts commit 98fe30438c.
After some discussion, it was concluded that we want the full
`prometheus_tsdb_...` prefix hardcoded in the library.
Signed-off-by: beorn7 <beorn@soundcloud.com>
There is not guarantee or requirement for WAL writers to only add
series entries in increasing order of IDs. A postings list cannot look
back and thus unordered WAL entries would skip over IDs to not truncate
from the WAL.
We replace it with a simple boolean check function that does not require
order.
We were still fsyncing while holding the write lock when we cut a new
segment. Given we cannot do anything but logging errors, we might just
as well complete segments asynchronously.
There's not realistic use case where one would fsync after every WAL
entry, thus make the default of a flush interval of 0 to never fsync
which is a much more likely use case.
This adds various new locks to replace the single big lock on
the head. All parts now must be COW as they may be held by clients
after initial retrieval.
Series by ID and hashes are now held in a stripe lock to reduce
contention and total holding time during GC. This should reduce
starvation of readers.
This changes the structure to a single WAL backed by a single head
block.
Parts of the head block can be compacted. This relieves us from any head
amangement and greatly simplifies any consistency and isolation concerns
by just having a single head.
