Anil,
Eugene's usecase is such that his memory is low (300Mb) but larger
diskspace.
He has already configured eviciton to manage the memory aspect. He is
just trying to clean up some local disk space. This is a continuation of
a previous thread "System Out of Memory".
But yes, eviciton could fulfill the same requirement if his memory was
larger.
--Udo
On 28/04/2016 7:41 am, Anilkumar Gingade wrote:
Any reason why the supported eviction/expiration does not work for
your case...
-Anil.
On Wed, Apr 27, 2016 at 1:49 PM, Udo Kohlmeyer <[email protected]
<mailto:[email protected]>> wrote:
Hi there Eugene,
The free space checking code, is that running as a separate
process or as part of each of the server jvms?
I would run the free space checking as part of each
server(deployed as part of the server code). This way each server
will monitor it's own free space.
I'm not sure how to get the last access time of each item, but if
you can get hold of that information, then you can run some code
that will use the PartitionRegionHelper.getLocalData(Region) or
PartitionRegionHelper.getLocalPrimaryData(Region) to get the local
data.
Then you could remove/invalidate the data entry.
Also disk store compaction now plays a role. So you might have to
trigger a compaction of the diskstore in order to avoid
unnecessary data being held in the diskstores.
The simplest way you could do this is by running the following:
(as per the DiskStore API
<http://geode.incubator.apache.org/releases/latest/javadoc/com/gemstone/gemfire/cache/DiskStore.html>)
Cache cache = CacheFactory.getAnyInstance();
DiskStore diskstore = cache.findDiskStore("diskStoreName");
diskstore.forceCompaction();
The forceCompaction method is blocking, so please do not make this
code as part of some critical processing step.
--Udo
On 28/04/2016 6:25 am, Eugene Strokin wrote:
I'm running a periodic check of the free space on each node of my
cluster. The cluster contains a partitioned region.
If some node is getting full, I'd like to remove least recently
used items to free up the space. New items are getting loaded
constantly.
I've enabled statistics, so it looks like I can get last access
time of each item, but I'd like to iterate through only "local"
items, the items which are stored on the local node only. I'm
trying different things, but none of them seems right.
Is it even possible? If so, could you please point me to the
right direction?
Thank you,
Eugene
