August 2011 - infinispan-issues - Jboss List Archives

[JBoss JIRA] Created: (ISPN-999) Support eventual consistency

by Manik Surtani (JIRA)

Support eventual consistency ---------------------------- Key: ISPN-999 URL: https://issues.jboss.org/browse/ISPN-999 Project: Infinispan Issue Type: Feature Request Components: Distributed Cache, Locking and Concurrency Reporter: Manik Surtani Assignee: Manik Surtani Fix For: 5.1.0.BETA1, 5.1.0.Final Essentially, it is about supporting eventual consistency in Infinispan. Currently Infinispan is strongly consistent when using synchronous distribution mode. Each data owner receives updates synchronously so anyone anywhere on the cluster doing a GET will see the correct value. The only exception is during a rehash (when a new node joins or leaves), that consistency is eventual since the GET may reach a new joiner who may not have applied state it receives from its neighbours yet. However this is hidden from users since the GET is sent to> 1 data owner and if an UnsureResponse is received (determined by the fact that a new joiner responds and the new joiner wouldn't have finished applying state), the caller thread waits for more definite responses. However, there is a use case for being eventually consistent as well: the main benefits being speed and partition tolerance. E.g., if we use distribution in asynchronous mode, the writes become *much* faster. However, anyone anywhere doing a GET will have to perform the GET on all data owners, and compare the versions of the data received to determine which is the latest. And if there is a conflict, to pass back all values to the user. So in terms of design, what I have in mind is: * All cache entries are versioned using vector clocks. One vector clock per node. * When a node performs a GET, the GET is sent to all data owners (concurrently), and the value + version is retrieved from each. * If the versions are all the same (or they can be "fast forwarded"), the value is returned * Otherwise, all potential values and their versions are returned * A resolve() API should be provided where application code may provide a "hint" as to which version should be "correct" - which will cause an update. * In terms of implementation, this will touch the DistributionInterceptor, InternalCacheEntry and relevant factories, some config code (since this should be consistency model should be configurable), and a new public interface. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years

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[JBoss JIRA] Created: (ISPN-1147) Programmatically creating cache should be automatically reflected throughout the cluster

by Randall Hauch (JIRA)

Programmatically creating cache should be automatically reflected throughout the cluster ---------------------------------------------------------------------------------------- Key: ISPN-1147 URL: https://issues.jboss.org/browse/ISPN-1147 Project: Infinispan Issue Type: Feature Request Components: Distributed Cache, State transfer Affects Versions: 4.2.1.FINAL Reporter: Randall Hauch Assignee: Manik Surtani Consider a symmetric cluster of two nodes (N1 and N2) each with a single cache (C1). Currently, a new cache (C2) must be programmatically created _on all all nodes in the cluster_ (if REPL, or all appropriate nodes if DIST) _before_ that new cache can even be _used_. Ideally, when a new cache (C2) is created on one node (N1), Infinispan should automatically propagate that creation to the appropriate nodes in the cluster so that the new cache can be used immediately. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years

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[JBoss JIRA] Created: (ISPN-1347) LIRS eviction not evicting correctly

by Jozef Vilkolak (JIRA)

LIRS eviction not evicting correctly ------------------------------------ Key: ISPN-1347 URL: https://issues.jboss.org/browse/ISPN-1347 Project: Infinispan Issue Type: Bug Components: Eviction Affects Versions: 5.0.0.FINAL Reporter: Jozef Vilkolak Assignee: Manik Surtani It seems LIRS eviction at this moment only evicts the first entry in the HIR queue and nothing else. I have written a test based on [this presentation|https://docs.google.com/viewer?a=v&q=cache:jcEF5qSkCo4J:www....] located in the eviction-strategy module of [edg-functional-tests|https://svn.devel.redhat.com/repos/jboss-qa/edg/edg-...] that is at the moment failing. Upon closer examination I have found a couple of things I think may be the cause: * in infinispan.util.concurrent.BoundedConcurrentHashMap ** in execute() of the LIRS eviction if you have more items in the accessQueue and while processing you choose an item to be evicted it is added to the evicted Set. But if it is still in the accessQueue(and the operation was put) it gets proccesed but in the end still ends up evicted because it was not removed from the evicted set. ** in onEntryMiss of the LIRS eviction the very first if shouldn't first increment currentLIRSize because otherwise LIRSize is never full and therefore the LIRS algorithm never truly happens because execute() is never called that's why it only evicts from the HIR queue. It also causes the cache to be able to hold only maxEntries-1 entries. Also if (queue.size() < hirSizeLimit) condition is true the item should also be added to the stack in order to track its recency. And lastly I don't think onEntryMiss should be evicting elements because that way we can't track their recency. They will get eventually evicted by pruning. ** the function onEntryRemove should not in my opinion remove entries from the stack because otherwise there is no way to track recency of HIR-nonresident blocks. They will eventually get removed from the stack by pruning. It also seems this function gets called when clearing the cache instead of clear. * in Segment class ** the remove operation makes entries behave as if they were just added as is already documented there with a TODO ** the get operation calls onEntryHit which can cause problems if get is used while servicing a put operation because it gets called twice If some of these things were design choices let me know so I will modify the test. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years

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[JBoss JIRA] Created: (ISPN-1320) indexing properties defined for <namedCache/> in xml are ignored therefore indexes are always persistent

by Jan Slezak (JIRA)

indexing properties defined for <namedCache/> in xml are ignored therefore indexes are always persistent -------------------------------------------------------------------------------------------------------- Key: ISPN-1320 URL: https://issues.jboss.org/browse/ISPN-1320 Project: Infinispan Issue Type: Bug Reporter: Jan Slezak Assignee: Manik Surtani indexing properties defined for <namedCache/> in xml are ignored therefore indexes are always persistent; see reproduction steps for xml / UT -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years

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[JBoss JIRA] Created: (ISPN-633) NotSerializableException seen on DIST deadlock detectioion

by Erik Salter (JIRA)

NotSerializableException seen on DIST deadlock detectioion ---------------------------------------------------------- Key: ISPN-633 URL: https://jira.jboss.org/browse/ISPN-633 Project: Infinispan Issue Type: Bug Affects Versions: 4.2.0.ALPHA1 Reporter: Erik Salter Assignee: Manik Surtani Attachments: infinispan-multiplethreads.tgz As reported on the forums: -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years

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[JBoss JIRA] Created: (ISPN-1282) README-Maven.txt double redirection

by Emmanuel Bernard (JIRA)

README-Maven.txt double redirection ----------------------------------- Key: ISPN-1282 URL: https://issues.jboss.org/browse/ISPN-1282 Project: Infinispan Issue Type: Enhancement Reporter: Emmanuel Bernard Assignee: Manik Surtani README-maven redirects to http://community.jboss.org/wiki/InfinispanandMaven which asks you to redirect to https://docs.jboss.org/author/display/ISPN/Infinispan+and+Maven which asks you to redirect to https://docs.jboss.org/author/display/ISPN/Contributing+to+Infinispan#Con... Note that these redirects and the info must live here forever to be able to rebuild old version of Infinispan. If a change is made, the old content needs to be kept. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 1 month

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[JBoss JIRA] Created: (ISPN-132) FIFO queu support

by Bryan Grunow (JIRA)

FIFO queu support ----------------- Key: ISPN-132 URL: https://jira.jboss.org/jira/browse/ISPN-132 Project: Infinispan Issue Type: Feature Request Components: Core API Reporter: Bryan Grunow Assignee: Manik Surtani Add support for retrieving entries from the cache via insertion (FIFO) order. For example, cache.getNext(); would return the next entry in the queue. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 1 month

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[JBoss JIRA] Created: (ISPN-492) Use map implementations that do array equality based on contents

by Galder Zamarreno (JIRA)

Use map implementations that do array equality based on contents ---------------------------------------------------------------- Key: ISPN-492 URL: https://jira.jboss.org/browse/ISPN-492 Project: Infinispan Issue Type: Feature Request Reporter: Galder Zamarreno Assignee: Manik Surtani Make Infinispan use backing maps that do array equality based on its contents and not on reference. This would for example allow us to have maps with byte[] as keys without the need of wrapping these arrays into something else. This would need subclassing or reimplementing maps to make comparisons based on contents. An config option could be added if someone needed standard JDK map behavior. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 1 month

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[JBoss JIRA] Created: (ISPN-1318) replaceWithVersionAsync on RemoteCache (HotRod) fails to set lifespan of cache entries

by Martin Gencur (JIRA)

replaceWithVersionAsync on RemoteCache (HotRod) fails to set lifespan of cache entries -------------------------------------------------------------------------------------- Key: ISPN-1318 URL: https://issues.jboss.org/browse/ISPN-1318 Project: Infinispan Issue Type: Bug Affects Versions: 5.0.0.FINAL Reporter: Martin Gencur Assignee: Manik Surtani Cache entries remain in the cache even after their lifespan expires (when setting the lifespan via replaceWithVersionAsync and also via replaceWithVersion (sync)) The test verifying this can be found at https://svn.devel.redhat.com/repos/jboss-qa/edg/infinispan-functional-tes... - test method testReplaceWithVersionWithLifespanAsync() The test is failing on line assertEquals(null, cache.getVersioned("aKey")); To run it, one has to set ISPN_HOME property pointing to Infinispan build and run "mvn clean verify". -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 1 month

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[JBoss JIRA] Created: (ISPN-203) REST interface to Infinispan DB

by Michael Neale (JIRA)

REST interface to Infinispan DB ------------------------------- Key: ISPN-203 URL: https://jira.jboss.org/jira/browse/ISPN-203 Project: Infinispan Issue Type: Feature Request Components: Cache Server, Querying Reporter: Michael Neale Assignee: Michael Neale Fix For: 5.1.0.BETA1 As described here: http://www.jboss.org/community/wiki/InfinispanDB This will build on (or perhaps be built in) the server/rest module - as well as some additions of helper classes to core, and a query language to query module. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

12 years, 2 months

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infinispan-issues August 2011