Iterate over streams/segments rather than loading all of them into
memory. This reduces the memory overhead of metainfo loop.
Change-Id: I9e98ab98f0d5f6e80668677269b62d6549526e57
For metainfo loop we need only some of Segment fields. By removing some of them we will reduce memory consumption during loop.
Change-Id: I4af8baab58f7de8ddf5e142380180bb70b1b442d
This method will be used only with metainfo loop and we need to customize query to consume less memory.
Change-Id: Iaa97392f483c5df5609d501b3847b80eb1ea2583
We want to read from DB only those fields that are used by metainfo loop so we need to remove most of fields from LoopObjectEntry.
Change-Id: I14ecae288f631dc0ff54f4c560ce43b736eccdcf
We want to have custom loop iterator to avoid reading all object fields to reduce memory consumpion. This is first step to just rename existing iterator to IterateLoopObjects.
Change-Id: I8878ff21a49ba224db2d497cc8f9076e75c7609e
New metainfo loop can have memory issues when in one batch we will have object with many segments. This change limits number of batched segments to defined limit. Solution is not perfect as if we will have single object with extreme large segments count it can cross defined limit a lot. We need to prepare safer solution soon.
Change-Id: Iefcf466d5bac76513d4219b1a9d99adc361c54ae
Segments are not read in batches. For each batch of objects
we are reading all segments for those objects.
Change-Id: Idaf19bbe4d4b095065d59399dd326e22c57499a6
ListAllBuckets could skip buckets when the total number of buckets
exceeds list limit. Replace listing buckets with looping directly
on the objects table.
Change-Id: I43da2fdf51e83915a7854b782f0e9ec32c373018
IterateObjectsAllVersionsWithStatus
We need different implementation for IterateObjectsAllVersions because
we want to iterate over all object without specifying object status.
Existing method will have new name but implementation details are not
changed.
Change-Id: I01b987996772fa7f8fd73da9910d52db2d1aa0d7
This fix issues with passing observers between iteration methods.
It's not best implementation but I think we will need to optimize it
soon one way or another.
Change-Id: I574599bfd10822d84e2d2f1800bcd88e176a76ea
It was designed to detect and remove zombie segments in the PointerDB.
This tool should be not relevant with the MetabaseDB anymore.
Change-Id: I112552203b1329a5a659f69a0043eb1f8dadb551
As part of the Metainfo Refactoring, we need to make the Metainfo Loop
working with both the current PointerDB and the new Metabase. Thus, the
Metainfo Loop should pass to the Observer interface more specific Object
and Segment types instead of pb.Pointer.
After this change, there are still a couple of use cases that require
access to the pb.Pointer (hence we have it as a field in the
metainfo.Segment type):
1. Expired Deletion Service
2. Repair Service
It would require additional refactoring in these two services before we
are able to clean this.
Change-Id: Ib3eb6b7507ed89d5ba745ffbb6b37524ef10ed9f
This adds support for observers to join the loop together. This allows
to ensure that when multiple observers join, they will be part of the
same loop iteration.
Change-Id: Ie887d4cedfb074b65c782690a2c09c1704f56dfe
rationale: if GC kills the satellite, it would be nice to make
it through a repair checker sweep first
Change-Id: Id56171dc8e13940cfb6481e36a910bad077a01ed
When the context was being cancelled the error was being discarded within the rate limiting error handling which caused tests to fail.
Change-Id: I5c6458c16da09a11531233ea0ee80d914969cb3f
As per discussed we decided to rate limit how fast we iterate through
the metainfo database in the metainfo loop. This puts in place a
mechanism for rate limiting and burst limiting if need be in the future.
The default for this rate limiting is still no limits so it stays the
same as our previous functionality.
Change-Id: I950f7192962b0e49f082d2c4284e2d52b0a925c7
* satellite/metainfo: Rollback path parts check in loop
We have to rollback the changes applied in checking the rawPath parts
from 4 to 3 because the production prointerDB is still storing buckets.
* satellite/metainfo: Don't return path parts less 4
Don't return an error in the metainfo loop iterator when a path doesn't
have 4 parts because it belongs to bucket metadata, not an actual
object.
