Details
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Bug
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Resolution: Cannot Reproduce
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Major - P3
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None
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1.8.1, 2.0.2, 2.0.4
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None
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Linux 2.6.32-5-amd64 #1 SMP x86_64 GNU/Linux
debian 6.0.1
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Linux
Description
An index , other than "id" on a capped collection can grow with no limitation, and it's space never reused.
I have a capped collection with 7 indexes which was capped to 16G. in several days it's indexes reached 24G in size.
Furthermore, when I ran a validate command on 16G collection (with 24G indexes) - mongod server crashed.
Here is an example on a smaller collection with the same indexes, which I ran with a difference of several minutes:
db.coll1.stats();
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{
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"ns" : "db1.coll1",
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"count" : 2746628,
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"size" : 1029799416,
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"avgObjSize" : 374.93225001711187,
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"storageSize" : 1073745920,
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"numExtents" : 1,
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"nindexes" : 8,
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"lastExtentSize" : 1073745920,
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"paddingFactor" : 1,
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"flags" : 1,
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"totalIndexSize" : 1726918368,
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"indexSizes" : {
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"_id_" : 89142928,
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"date_-1" : 199666096,
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"date_updated_-1" : 192160528,
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"level_1" : 110376000,
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"date_updated_-1_level_1" : 247332176,
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"date_-1_facility_1" : 221119920,
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"date_-1_host_1_facility_1" : 323229984,
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"date_updated_-1_host_1_level_1" : 343890736
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},
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"capped" : 1,
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"max" : 2147483647,
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"ok" : 1
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}
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several minutes later:
db.coll1.stats();
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{
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"ns" : "db1.coll1",
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"count" : 2746972,
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"size" : 1029794112,
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"avgObjSize" : 374.88336684902504,
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"storageSize" : 1073745920,
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"numExtents" : 1,
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"nindexes" : 8,
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"lastExtentSize" : 1073745920,
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"paddingFactor" : 1,
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"flags" : 1,
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"totalIndexSize" : 1728529040,
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"indexSizes" : {
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"_id_" : 89142928,
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"date_-1" : 199935904,
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"date_updated_-1" : 192422160,
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"level_1" : 110343296,
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"date_updated_-1_level_1" : 247479344,
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"date_-1_facility_1" : 221455136,
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"date_-1_host_1_facility_1" : 323614256,
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"date_updated_-1_host_1_level_1" : 344136016
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},
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"capped" : 1,
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"max" : 2147483647,
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"ok" : 1
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}
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also I was trying to bring the extent information for this collection - but the server crashes again (log of that crash attached)
Attachments
Issue Links
- related to
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SERVER-22381 Capped Collection size should account for Data + Index
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- Closed
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