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Type:
Improvement
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Resolution: Won't Fix
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: cookbook
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Labels:None
Created a script to find the size of a chunk given a document. Makes use of the datasize command, so may not be ideal for manual. Also may not be best performance, but is useful nonetheless.
ChunkInfo = function(ns,doc){
var configDB = db.getSiblingDB("config");
var db1 = db.getSiblingDB(ns.split(".")[0]);
var key = configDB.collections.findOne({_id:ns}).key;
var sk = db1.getCollection(ns.split(".")[1]).findOne(doc, key); //Find Shard Key from given doc.
if(!sk){
print("Can't find chunk!");
return;
}
var chunk = configDB.chunks.find({"ns" : ns, max: {$gt:sk} }).sort({min:1}).limit(1).next();
var dataSizeResult = db1.runCommand({datasize:chunk.ns, keyPattern:key, min:chunk.min, max:chunk.max});
print("***********Chunk Information***********");
printjson(chunk);
print("Chunk Size: "+dataSizeResult.size)
print("Objects in chunk: "+dataSizeResult.numObjects)
}