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Record the number of open db iterators.

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Summary: Enhance the statitics to report the number of open db iterators.

Test Plan: make check

Reviewers: haobo, emayanke

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D10983
This commit is contained in:
Dhruba Borthakur
2013-05-28 14:00:10 -07:00
parent fb684da082
commit a8d807ee91
2 changed files with 8 additions and 3 deletions
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3
include/leveldb/statistics.h
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@@ -47,7 +47,8 @@ enum Tickers {
// write throttle because of too many files in L0
STALL_L0_NUM_FILES_MICROS = 15,
RATE_LIMIT_DELAY_MILLIS = 16,
TICKER_ENUM_MAX = 17
NO_ITERATORS = 17, // number of iterators currently open
TICKER_ENUM_MAX = 18
};