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Details

Type: Bug
Resolution: Done
Priority: Minor - P4
Fix Version/s: 2.2.0
Affects Version/s: 2.0.1
Component/s: Concurrency
Labels:
None
Environment:
64bit Ubuntu 11.04 + gcc 4.5.2

Operating System:
Linux

Description

By locking the database and issuing a single write, all readers are starved. No read operations can go through.

Because of this, a new shell will start but cannot be used – it must be doing some read-lock requiring operation. Ostensibly, this is due to the shell attempting to read but being unable to do so due to the waiting write starving any reader attempt.

Issuing "mongo --eval 'db.fsyncUnlock()'" will unlock the database, allow writes through, and unfreeze the shell.

Attachments

Issue Links

is duplicated by

SERVER-4281 isMaster command hangs if db is fsyncLocked and authentication is enabled

Closed

is related to

SERVER-2278 A locked mongod can't access a new database.

Closed

SERVER-4277 Creating new shell while fsync locked with authentication hangs.

Closed

SERVER-1423 reads often aren't possible while in fsync and lock mode

Closed

Activity

People

Assignee:: Dwight Merriman

Reporter:: Daniel Pasette (Inactive)

Participants:: auto, Daniel Pasette, Dwight Merriman

Votes:: 3 Vote for this issue

Watchers:: 11 Start watching this issue

Dates

Created:: Nov 10 2011 04:34:18 PM UTC

Updated:: Jul 11 2016 06:34:52 PM UTC

Resolved:: Nov 03 2015 11:29:28 PM UTC