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https://issues.apache.org/jira/browse/OAK-3253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15130320#comment-15130320
]
Shashank Gupta edited comment on OAK-3253 at 2/4/16 6:48 AM:
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h2. How to enable caching in FileDatastore.
* PID org.apache.jackrabbit.oak.plugins.blob.datastore.FileDataStore
* [Sample config
attached|https://issues.apache.org/jira/secure/attachment/12786204/org.apache.jackrabbit.oak.plugins.blob.datastore.FileDataStore.config]
h3. Fresh Installation:
* path: path of NAS or SAN storage (required)
* cacheSize: size of cache in bytes ( required and > 0)
* cachePath: path of local file system cache( optional). Default is
$\{home.dir\}/repository/datastoreCache.
h3. Migration from FileDataStore on SAN to cache enabled FileDataStore
* path: path of NAS or SAN storage (required)
* cacheSize: size of cache in bytes( required and > 0)
* cachePath: path of local file system cache( optional). Default is
$\{home.dir\}/repository/datastoreCache.
h3. Migration from FileDataStore on local file system to cache enabled
FileDataStore on SAN
* path: path of NAS or SAN storage (required)
* cacheSize: size of cache in bytes( required and > 0)
* cachePath: path of local file system of FileDataStore. Default is
$\{home.dir\}/repository/datastoreCache.
To disable caching in FileDataStore don't configure {{cacheSize}} or set
{{cacheSize=0}}
was (Author: shgupta):
h2. How to enable caching in FileDatastore.
* PID org.apache.jackrabbit.oak.plugins.blob.datastore.FileDataStore
* [Sample config
attached}https://issues.apache.org/jira/secure/attachment/12786204/org.apache.jackrabbit.oak.plugins.blob.datastore.FileDataStore.config]
h3. Fresh Installation:
* path: path of NAS or SAN storage (required)
* cacheSize: size of cache in bytes ( required and > 0)
* cachePath: path of local file system cache( optional). Default is
$\{home.dir\}/repository/datastoreCache.
h3. Migration from FileDataStore on SAN to cache enabled FileDataStore
* path: path of NAS or SAN storage (required)
* cacheSize: size of cache in bytes( required and > 0)
* cachePath: path of local file system cache( optional). Default is
$\{home.dir\}/repository/datastoreCache.
h3. Migration from FileDataStore on local file system to cache enabled
FileDataStore on SAN
* path: path of NAS or SAN storage (required)
* cacheSize: size of cache in bytes( required and > 0)
* cachePath: path of local file system of FileDataStore. Default is
$\{home.dir\}/repository/datastoreCache.
To disable caching in FileDataStore don't configure {{cacheSize}} or set
{{cacheSize=0}}
> Support caching in FileDataStoreService
> ---------------------------------------
>
> Key: OAK-3253
> URL: https://issues.apache.org/jira/browse/OAK-3253
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: blob
> Affects Versions: 1.3.3
> Reporter: Shashank Gupta
> Assignee: Shashank Gupta
> Priority: Blocker
> Labels: candidate_oak_1_0, candidate_oak_1_2, docs-impacting,
> features, performance
> Fix For: 1.4, 1.3.15
>
> Attachments: OAK-3253.txt,
> org.apache.jackrabbit.oak.plugins.blob.datastore.FileDataStore.config
>
>
> FDS on SAN/NAS storage is not efficient as it involves network call. In OAK.
> indexes are stored SAN/NAS and even idle system does lot of read system
> generated data.
> Enable caching in FDS so the reads are done locally and async upload to
> SAN/NAS
> See [previous
> discussions|https://issues.apache.org/jira/browse/OAK-3005?focusedCommentId=14700801&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14700801]
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