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  1. PO
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    <p>Another Windows tool nl. MongoVue also looks for <em>filename</em> instead of <em>fileName</em>. I'd say the answer is more likely filename instead of fileName. </p> <hr> <p>With retrieving the small Windows file from GridStore, I found a bug, but I don't know how to fix it. I guess there must be some value like Chunk.CurrentSize or the like, but looking at the chunk.js file in the native node mongo driver <a href="https://github.com/mongodb/node-mongodb-native/blob/master/lib/mongodb/gridfs/chunk.js" rel="nofollow">https://github.com/mongodb/node-mongodb-native/blob/master/lib/mongodb/gridfs/chunk.js</a>, I did the following...</p> <p>I found this:</p> <pre><code>Chunk.prototype.readSlice = function(length) { if ((this.length() - this.internalPosition + 1) &gt;= length) { var data = null; if (this.data.buffer != null) { //Pure BSON data = this.data.buffer.slice(this.internalPosition, this.internalPosition + length); } else { //Native BSON data = new Buffer(length); length = this.data.readInto(data, this.internalPosition); } this.internalPosition = this.internalPosition + length; return data; } else { return null; } }; </code></pre> <p>and moved the following </p> <pre><code>data = this.data.buffer.slice(this.internalPosition, this.internalPosition + length); </code></pre> <p>into the this if statement (1024 * 256 is the value from Chunk.DEFAULT_CHUNK_SIZE = 1024 * 256;)</p> <pre><code> if (this.data.buffer != null) { //Pure BSON if (this.data.buffer.length &gt; 1024 * 256) { // move to here } else { data = this.data.buffer; } </code></pre> <p>like so:</p> <pre><code>Chunk.prototype.readSlice = function(length) { if ((this.length() - this.internalPosition + 1) &gt;= length) { var data = null; if (this.data.buffer != null) { //Pure BSON if (this.data.buffer.length &gt; 1024 * 256) { data = this.data.buffer.slice(this.internalPosition, this.internalPosition + length); } else { data = this.data.buffer; } } else { //Native BSON data = new Buffer(length); length = this.data.readInto(data, this.internalPosition); } this.internalPosition = this.internalPosition + length; return data; } else { return null; } }; </code></pre> <p>The issue with windows files smaller than the chunk size is solved, but this isn't the most elegant solution. I'd like to propose this as the answer, but I realize using the default chunk size hard coded isn't the dynamic value which would make this less of a workaround ;-)</p>
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    1. POMongoDB GridFS - Is it filename or fileName
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    1. USAndre Jonker
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      1. VTUpMod
    1. COLooks like the problem is the GridFS Readstream support for small ASCII files then?
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      1. USOnes and Zeroes
 

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