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Details

Type: Bug
Resolution: Won't Fix
Priority: Major - P3
Fix Version/s: None
Affects Version/s: None
Component/s: None
Labels:
None

Assigned Teams:

Replication
Operating System:
ALL

Description

During oplog replay in initial sync we don't advance the oldest timestamp. This can pin a lot of data in the cache. Resulting symptoms include

slow initial sync due to resulting cache churn
growth of lookaside (cache overflow) table and corresponding file WiredTigerLAS.wt
in extreme cases cache-full hangs were observed. This was believed fixed with ~~SERVER-33191~~, but we should be alert for new occurrences of this issue.

Attachments

Issue Links

is caused by

WT-4016 Measure and improve lookaside performance with stable_timestamp set

Closed

related to

SERVER-33191 Cache-full hangs on 3.6

Closed

SERVER-34900 initial sync uses different batch limits from steady state replication

Closed

SERVER-34938 Secondary slowdown or hang due to content pinned in cache by single oplog batch

Closed

SERVER-34942 Stuck with cache full during oplog replay in initial sync

Closed

SERVER-36238 replica set startup fails in wt_cache_full.js, initial_sync_wt_cache_full.js, recovery_wt_cache_full.js when journaling is disabled

Closed

(1 related to)

Activity

People

Assignee:: Backlog - Replication Team

Reporter:: Bruce Lucas (Inactive)

Participants:: Backlog - Replication Team, Bruce Lucas, Lingzhi Deng

Votes:: 0 Vote for this issue

Watchers:: 22 Start watching this issue

Dates

Created:: Aug 07 2018 04:50:54 PM UTC

Updated:: Oct 02 2023 06:26:29 PM UTC

Resolved:: Oct 02 2023 06:26:29 PM UTC