CommitPolicy HARD can soak CPU

Bug #1036422 reported by Peter Beaman
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Akiban Persistit
Peter Beaman

Bug Description

While testing we observed high CPU utilization in JournalManager#waitForDurability(). The cause is incorrect logic in the wait loop.

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Peter Beaman (pbeaman)
Changed in akiban-persistit:
assignee: nobody → Peter Beaman (pbeaman)
Revision history for this message
Peter Beaman (pbeaman) wrote :

Revision 353 purported to fix this bug. However, it introduced two other problems:

(a) spinSleep waited longer (1ms) than the actual force() method required and therefore disk utilization was limited.
(b) in HARD mode, read-only transactions can wait forever for durability.

Changed in akiban-persistit:
status: Confirmed → Fix Released
status: Fix Released → In Progress
Peter Beaman (pbeaman)
Changed in akiban-persistit:
status: In Progress → Fix Released
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