Details
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Bug
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Status: Closed
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Major - P3
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Resolution: Duplicate
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3.2.5, 3.2.6
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None
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None
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ALL
Description
When I tried to convert a huge collection (about 0.4 billion records) to a sharding collection, I found it could not move the chunks and could not split the chunks.
When the balance tried to move the chunk, I got the following error:
2016-05-24T15:22:52.418+0800 I SHARDING [Balancer] moveChunk result: { chunkTooBig: true, estimatedChunkSize: 33553905, ok: 0.0, errmsg: "chunk too big to move" }
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2016-05-24T15:45:26.569+0800 W SHARDING [conn132080234] cannot move chunk: the maximum number of documents for a chunk is 250001 , the maximum chunk size is 67108864 , average document size is 133. Found 252289 documents in chunk
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When it tried to split the chunk, I got the following error:
2016-05-24T15:22:52.530+0800 I SHARDING [Balancer] split results: CannotSplit: chunk not full enough to trigger auto-split
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I use default chunk size 64MB.
mongos> db.settings.find()
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{ "_id" : "chunksize", "value" : NumberLong(64) }
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It seems that it fails to move because the record count is > 250001, and fails to split because the chunk size is not large enough?
My mongodbs version are 3.2.5 and 3.2.6.
Attachments
Issue Links
- duplicates
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- Closed
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