Repair workers prioritize the most unhealthy segments. This has the consequence that when we
finally begin to reach the end of the queue, a good portion of the remaining segments are
healthy again as their nodes have come back online. This makes it appear that there are more
injured segments than there actually are.
solution:
Any time the checker observes an injured segment it inserts it into the repair queue or
updates it if it already exists. Therefore, we can determine which segments are no longer
injured if they were not inserted or updated by the last checker iteration. To do this we
add a new column to the injured segments table, updated_at, which is set to the current time
when a segment is inserted or updated. At the end of the checker iteration, we can delete any
items where updated_at < checker start.
Change-Id: I76a98487a4a845fab2fbc677638a732a95057a94
Another change which is a part of refactoring to replace path parameter
(string/[]byte) with key paramter (metabase.SegmentKey)
Change-Id: I617878442442e5d59bbe5c995f913c3c93c16928
* Delete expired segments in expired segments service using metainfo
loop
* Add test to verify expired segments service deletes expired segments
* Ignore expired segments in checker observer
* Modify checker tests to verify that expired segments are ignored
* Ignore expired segments in segment repairer and drop from repair queue
* Add repair test to verify that a segment that expires after being
added to the repair queue is ignored and dropped from the repair queue
Change-Id: Ib2b0934db525fef58325583d2a7ca859b88ea60d
* add outline for ECRepairer
* add description of process in TODO comments
* begin download/getting hash for a single piece
* verify piece hash and order limit during download
* fix download piece
* begin filling out ESREpair. Get
* wip move ecclient.Repair to ecrepairer.Repair
* pass satellite signee into repairer
* reconstruct original stripe from pieces
* move rebuildStripe()
* calculate piece size differently, increment successful count
* fix shares slices initialization
* rename stripeData to segment
* do not pad reader in Repair()
* temp debug
* create unsafeRSScheme
* use decode reader
* rename file name to be all lowercase
* make repair downloader async
* declare condition variable inside Get method
* set downloadAndVerifyPiece's in-memory buffer to be share size
* update unusedLimits var
* address comments
* remove unnecessary comments
* move initialization of segmentRepaire to be outside of repairer service
* use ReadAll during download
* remove dots and move hashing to after validating for order limit signature
* wip test
* make sure files exactly at min threshold are repaired
* remove unused code
* use corrput data and write back to storagenode
* only create corrupted node and piece ids once
* add comment
* address nat's comment
* fix linting and checker_test
* update comment
* add comments
* remove "copied from ecclient" comments
* add clarification comments in ec.Repair
* rename pkg/linksharing to linksharing
* rename pkg/httpserver to linksharing/httpserver
* rename pkg/eestream to uplink/eestream
* rename pkg/stream to uplink/stream
* rename pkg/metainfo/kvmetainfo to uplink/metainfo/kvmetainfo
* rename pkg/auth/signing to pkg/signing
* rename pkg/storage to uplink/storage
* rename pkg/accounting to satellite/accounting
* rename pkg/audit to satellite/audit
* rename pkg/certdb to satellite/certdb
* rename pkg/discovery to satellite/discovery
* rename pkg/overlay to satellite/overlay
* rename pkg/datarepair to satellite/repair
