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https://issues.apache.org/jira/browse/OAK-2393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14274776#comment-14274776
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Chetan Mehrotra commented on OAK-2393:
--------------------------------------
Recently we are seeing issues on Mongo based deployment
{noformat}
"errmsg" : "exception: BSONObj size: 19927935
(0x130137F) is invalid. Size must be between 0 and 16793600(16MB) First
element: _id: \"4:/oak:index/lucene/:data/_no.fdt\"" , "code" : 10334 , "ok" :
0.0}
{noformat}
This happens because the default blobSize of 32KB causes a large array (at time
of 60515 entries for a 2 GB file). In case of reindex the older revision of
that array is kept in same Mongo document and this cases the Mongo document
size to become greater than 16 MB.
So having a large blobSize would lead to shorter array size also and help in
above cases
> Change default blob size to around 1 MB in OakDirectory
> -------------------------------------------------------
>
> Key: OAK-2393
> URL: https://issues.apache.org/jira/browse/OAK-2393
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: oak-lucene
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Priority: Minor
> Fix For: 1.2, 1.0.10
>
>
> With OAK-2201 the blobSize is made configurable but the default blobSize is
> still set to 32KB. This should now be increased to ~ 1 MB.
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