Re: How to Force a Connection Failover in an ActiveMQ Replicated LevelDB Cluster ?

er do > the > job. > > > > -- > View this message in context: http://activemq.2283324.n4. > nabble.com/How-to-Force-a-Connection-Failover-in-an- > ActiveMQ-Replicated-LevelDB-Cluster-tp4720385p4720571.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. >

Re: How to Force a Connection Failover in an ActiveMQ Replicated LevelDB Cluster ?

The JMX operations "stop", "start" (or "restart") on the Master Broker do the job. -- View this message in context: http://activemq.2283324.n4.nabble.com/How-to-Force-a-Connection-Failover-in-an-ActiveMQ-Replicated-LevelDB-Cluster-tp4720385p4720571.html Sent fr

Re: How to Force a Connection Failover in an ActiveMQ Replicated LevelDB Cluster ?

I haven't personally tried this, but I'd expect that calling stop() on the networkConnector for the master broker via JMX would do what you want without requiring a full restart. (Then you could call start() to bring it back, as the slave.) http://activemq.apache.org/jmx.html has a table that

How to Force a Connection Failover in an ActiveMQ Replicated LevelDB Cluster ?

Currently I stop the ActiveMQ Master Node (by a systemd service) to force a Slave become the new Master. Afterwards I restart the stopped ActiveMQ Master Node (by a systemd service) which will become a new Slave. Is there another way to Force a Connection Failover without stopping and restarting

Re: StorePercentUsage increasing above 100% for slaves in ActiveMQ Replicated LevelDB Cluster (5.14.1).

Tim, I have submitted a bug report in JIRA : https://issues.apache.org/jira/browse/AMQ-6502 Patrick -- View this message in context: http://activemq.2283324.n4.nabble.com/StorePercentUsage-increasing-above-100-for-slaves-in-ActiveMQ-Replicated-LevelDB-Cluster-5-14-1-tp4719072p4719105.html

Re: StorePercentUsage increasing above 100% for slaves in ActiveMQ Replicated LevelDB Cluster (5.14.1).

Can you reproduce this reliably? If so, please submit a bug report in JIRA. Tim On Nov 8, 2016 1:40 AM, "Patrick Vansevenant" wrote: The StorePercentUsage of the master node is increasing and decreasing but remains more or less stable over the time. The

StorePercentUsage increasing above 100% for slaves in ActiveMQ Replicated LevelDB Cluster (5.14.1).

The StorePercentUsage of the master node is increasing and decreasing but remains more or less stable over the time. The StorePercentUsage of the slave nodes (JMX), on the other hand, is increasing all the time. I have already noticed values of 200% and more. The HA Cluster seems to work and I

Re: Replicated LevelDB uses Apache ZooKeeper problem

Hi I am also facing the same issue.Kindly suggest the solution.I have restarted zookeeper one after other in three servers.2. after starting the slave server activemq i am getting above issue reported. -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB

Re: Replicated LevelDB uses Apache ZooKeeper problem

mq.2283324.n4.nabble.com/Replicated-LevelDB-uses-Apache-ZooKeeper-problem-tp4709020p4715593.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: broker network replicated levelDB config problem

tions from one broker go to whichever member of a master/slave grouping is the active one at any point. What you've described in this thread sounds like you're doing master/slave using Zookeeper and replicated LevelDB, which is why you only have one active broker at a time. If you want a network

Re: broker network replicated levelDB config problem

Thank you very much. that's what I understood from the master / slave what I want to do is http://activemq.apache.org/networks-of-brokers.html But I always have a master / slave behavior A+JYT -- View this message in context: http://activemq.2283324.n4.nabble.com/broker-network-replicated

Re: broker network replicated levelDB config problem

m/broker-network-replicated-levelDB-config-problem-tp4711416p4711417.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: broker network replicated levelDB config problem

message. I'm trying to make a active/active cluster not master/slave. I need to secure it. I can't lost any messages. A+JYT PS I'm running activeMQ 5.11.1 and zookeeper 3.4.6 -- View this message in context: http://activemq.2283324.n4.nabble.com/broker-network-replicated-levelDB-config-problem

broker network replicated levelDB config problem

message in context: http://activemq.2283324.n4.nabble.com/broker-network-replicated-levelDB-config-problem-tp4711416.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

A lot of WARNs "invalid: logRefDecrement" on the slaves of Replicated LevelDB cluster

lot-of-WARNs-invalid-logRefDecrement-on-the-slaves-of-Replicated-LevelDB-cluster-tp4710993.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

A lot of WARNs "invalid: logRefDecrement" on the slaves of Replicated LevelDB cluster

lot-of-WARNs-invalid-logRefDecrement-on-the-slaves-of-Replicated-LevelDB-cluster-tp4710994.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: replicated leveldb

activemq replicated leveldb on 3 servers with two nics, a 1Gbit > and a 10Gbit. > I want the servers to communicate via the 10Gbit nics to which the clients > do not have access. > If possible, how configure? > Thanks > > > > -- > View this message in context: > http

Replicated LevelDB uses Apache ZooKeeper problem

g the pure java LevelDB implementation. | org.apache.activemq.leveldb.LevelDBClient | hawtdispatch-DEFAULT-1 Please advise if somebody have any idea Thanks in advance -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-uses-Apache-ZooKeeper-problem

Replicated LevelDB - Controlling ACL on Znodes

can impact the cluster. -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-Controlling-ACL-on-Znodes-tp4708957.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Exception encounter ActiveMQ with Replicated LevelDB

I have created 2 Jira’s for issues I have encountered with ActiveMQ with Replicated LevelDB. The latest issue I am encountering is more critical as the earlier one can be gotten around with NFSv3. https://issues.apache.org/jira/browse/AMQ-6173 <https://issues.apache.org/jira/browse/AMQ-6

Re: Exception encounter ActiveMQ with Replicated LevelDB

Please do; NFS issues are a known problem for KahaDB where you have a shared filesystem, but replicated LevelDB isn't supposed to have any shared filesystem elements and I've never heard of anyone having similar issues. Please document the options you're using for both your NFSv3 and NFSv4

Re: Exception encounter ActiveMQ with Replicated LevelDB

Hi Tim, I have been researching ActiveMQ with Replicated LevelDB for more than a month. I couldn’t figure out why it won’t failover back to the first server in the lineup. After lots of elimination process, I ended up suspecting the NFSv4 as I had issues with NFSv4 in non-ActiveMQ

Re: Exception encounter ActiveMQ with Replicated LevelDB

I can't help you (I've never used LevelDB) and this list doesn't have a resident LevelDB expert, but this sounds like a real bug so please submit a bug in JIRA if you haven't already. Can you reliably reproduce the problem? On Jan 31, 2016 11:33 PM, "Sunil Vishwanath" wrote: >

Re: Exception encounter ActiveMQ with Replicated LevelDB

The problem went away after the filesystem was downgraded to NFSv3 from NFSv4. -- View this message in context: http://activemq.2283324.n4.nabble.com/Exception-encounter-ActiveMQ-with-Replicated-LevelDB-tp4706710p4706761.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Exception encounter ActiveMQ with Replicated LevelDB

Hello, I am very new to this forum and I am hoping that you all will see this email. Currently I am testing the following setup: ActiveMQ 5.13.0 with LevelDB (3 node cluster). Zookeeper 3.4.6 (3 node cluster). Started up all 3 Zookeeper nodes. Started up all 3 ActiveMQ nodes. As I started

Re: ActiveMQ and Replicated LevelDB Store

1-st slave StorePercentUsage=510 TempPercentUsage=146 and on 2-nd slave StorePercentUsage=424 -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-and-Replicated-LevelDB-Store-tp4702593p4702987.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: ActiveMQ and Replicated LevelDB Store

brokers in a LevelDB cluster have vastly different StorePercentUsage values? Are there any best practices on managing and monitoring ActiveMQ? -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-and-Replicated-LevelDB-Store-tp4702593p4702732.html Sent from

Re: ActiveMQ and Replicated LevelDB Store

Master: > du -hs /var/activemq/data/ > 266M /var/activemq/data > Slave1: > du -hs /var/activemq/data/ > 124M /var/activemq/data > Slave2: > du -hs /var/activemq/data/ > 119M /var/activemq/data > > So question is what means > StorePercentUsage=93 > Te

ActiveMQ and Replicated LevelDB Store

means StorePercentUsage=93 TempPercentUsage=146 then used Replicated LevelDB Store Or in another words why Replicated LevelDB Store ignores this settings StoreLimit=8589934592 TempLimit=5368709120 -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-and-Replicated

Re: Durable client removal caused broker to shutdown in replicated leveldb

NFS trouble; did that happen again here? On Aug 19, 2015 1:14 AM, khandelwalanuj khandelwal.anu...@gmail.com wrote: hi, I am using replicated leveldb with ActiveMQ.5.11.1. We have recently observed an issue where when client connection removal caused broker to shutdown. This is very weird

Re: Durable client removal caused broker to shutdown in replicated leveldb

suspecting that could this cause broker to stop ? Thanks, Anuj -- View this message in context: http://activemq.2283324.n4.nabble.com/Durable-client-removal-caused-broker-to-shutdown-in-replicated-leveldb-tp4701209p4701241.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Durable client removal caused broker to shutdown in replicated leveldb

hi, I am using replicated leveldb with ActiveMQ.5.11.1. We have recently observed an issue where when client connection removal caused broker to shutdown. This is very weird. The client is a durable consumer who uses transactions and calls commit after each 10 messages. Can someone suggest what

Re: Durable client removal caused broker to shutdown in replicated leveldb

Did anyone get a chance to look at this ? -- View this message in context: http://activemq.2283324.n4.nabble.com/Durable-client-removal-caused-broker-to-shutdown-in-replicated-leveldb-tp4701209p4701232.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: ActiveMQ replicated leveldb with 2 brokers(replica = 1)

via zookeeper. So both of them sends their updated positions to the zookeeper and whoever has the latest position becomes the master. Thanks, Anuj -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-with-2-brokers-replica-1-tp4699679p4699777.html

Re: ActiveMQ replicated leveldb with 2 brokers(replica = 1)

in my case a single broker can also serve the client(1/2 +1 = 1) Thanks, Anuj -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-with-2-brokers-replica-1-tp4699679p4699749.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: ActiveMQ replicated leveldb with 2 brokers(replica = 1)

. -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-with-2-brokers-replica-1-tp4699679p4699739.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: ActiveMQ replicated leveldb with 2 brokers(replica = 1)

Hi Jim, But I am using replica =1 and (quorum = replica/2+1) AND quorum != (no of broker/2 +1). So in my case a single broker can also serve the client(1/2 +1 = 1) Thanks, Anuj -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-with-2

Re: ActiveMQ replicated leveldb with 2 brokers(replica = 1)

Any updates here. -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-with-2-brokers-replica-1-tp4699679p4699739.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

ActiveMQ replicated leveldb with 2 brokers(replica = 1)

: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-with-2-brokers-replica-1-tp4699679.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: AMQ-5082 (replicated LevelDB)

I've had a dev cluster running for a little while now and twice I've seen interruptions where the cluster didn't recover, didn't select a new master. I had hoped AMQ-5082 fixed that issue but it looks like there might be additional problems. How many of you folks are running replicated leveldb

Re: ActiveMQ Apollo and Replicated LevelDB Store

in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-Apollo-and-Replicated-LevelDB-Store-tp4695502p4695529.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: ActiveMQ Apollo and Replicated LevelDB Store

There is no such thing as ActiveMQ 6, yet. The code base of JBoss HornetQ was donated to the ActiveMQ community. That contribution was initially named ActiveMQ 6 (hence the git repo name) but is now known as ActiveMQ Artemis (Apollos twin sister in mythology). After the donation, a lot of work

Re: ActiveMQ Apollo and Replicated LevelDB Store

there isn't any active development on Apollo at the moment... but if you're keen to use it, and willing to contribute back, i know there are a few others that would offer to help :) but at the moment apollo doesn't have replicated leveldb. you could also take a look at ActiveMQ Artemis which does

ActiveMQ Apollo and Replicated LevelDB Store

Hi All, Sorry if this is a new bie question Can Apollo be used with replicated levelDB store? We recently benchmarked apollo and found it very suitable for our usecase. However we would like to have the option for HA and Failover. Is there any doc explaining integrating replicated levelDB

Re: Creating a Network of Replicated LevelDB broker clusters

On Tue, Mar 31, 2015 at 12:08 PM, wonderkind kevin...@am.sony.com wrote: Is your broker running pretty clean when you send messages through the fabric of network of replicated master/slaves? Yes, though I'm only running the examples/openwire/swissarmy producer/consumer example using the

Re: Creating a Network of Replicated LevelDB broker clusters

, 2015 at 5:29 PM To: SNEI kevin...@am.sony.commailto:kevin...@am.sony.com Subject: Re: Creating a Network of Replicated LevelDB broker clusters On Mon, Mar 30, 2015 at 4:57 PM, wonderkind [hidden email]/user/SendEmail.jtp?type=nodenode=4694097i=0 wrote: Do you have a sample activemq.xml

Re: Creating a Network of Replicated LevelDB broker clusters

+s2283324n4694156...@n4.nabble.commailto:ml-node+s2283324n4694156...@n4.nabble.com Date: Tuesday, March 31, 2015 at 12:37 PM To: SNEI kevin...@am.sony.commailto:kevin...@am.sony.com Subject: Re: Creating a Network of Replicated LevelDB broker clusters On Tue, Mar 31, 2015 at 12:08 PM, wonderkind

Re: Creating a Network of Replicated LevelDB broker clusters

On Tue, Mar 31, 2015 at 1:32 PM, wonderkind kevin...@am.sony.com wrote: What version of ActiveMQ are you running with? I am working with 5.11.1.. I'm running 5.11.1 plus the patch in ticket AMQ-5082. Jim

Re: Creating a Network of Replicated LevelDB broker clusters

Hi Jim, How big is your network? Do you see any significant degradation with a network of replicated levelDB brokers? Please see my comment below in red on my original post on the forum. Thanks. Kevin From: James A. Robinson-2 [via ActiveMQ] ml-node+s2283324n4694015...@n4

Re: Creating a Network of Replicated LevelDB broker clusters

On Mon, Mar 30, 2015 at 2:09 PM, wonderkind kevin...@am.sony.com wrote: How big is your network? Do you see any significant degradation with a network of replicated levelDB brokers? I haven't started stress testing the configuration yet, the current plan is to have network two clusters

Re: Creating a Network of Replicated LevelDB broker clusters

:43 PM To: SNEI kevin...@am.sony.commailto:kevin...@am.sony.com Subject: Re: Creating a Network of Replicated LevelDB broker clusters On Mon, Mar 30, 2015 at 2:09 PM, wonderkind [hidden email]/user/SendEmail.jtp?type=nodenode=4694084i=0 wrote: How big is your network? Do you see any significant

Re: Creating a Network of Replicated LevelDB broker clusters

. -- managementContext createConnector=false / /managementContext persistenceAdapter !-- http://activemq.apache.org/replicated-leveldb-store.html -- replicatedLevelDB replicas=3 zkSessionTimeout=5s zkPath=/activemq/amq-prod-1 zkAddress=zk1.example.org:2181,zk2.example.org:2182,zk3.example.org:2181, zk4

Creating a Network of Replicated LevelDB broker clusters

Has anyone ever created a network of brokers, with each broker been a Master/Slave replicated LevelDB store? Is this possible? Any problem with stability during new master election? Thanks

Re: Creating a Network of Replicated LevelDB broker clusters

On Fri, Mar 27, 2015 at 11:48 AM, wonderkind kevin...@am.sony.com wrote: Has anyone ever created a network of brokers, with each broker been a Master/Slave replicated LevelDB store? My understanding has been that, for replicated LevelDB, you need a set of three brokers, one master two slave

Re: Replicated LevelDB status (production worthy?)

So I think the problem is that org.linkedin.zookeeper.tracker.ZooKeeperTreeTracker doesn't appear to handle the event of a session disconnect. Or at least the version used by ActiveMQ doesn't... If I force tree to be rebuilt on a reconnect, my earlier unit test passes:

Re: Replicated LevelDB status (production worthy?)

I think you are correct here. The rebuild should work so long as the session has not expired. On 11 March 2015 at 20:51, James A. Robinson j...@highwire.org wrote: So I think the problem is that org.linkedin.zookeeper.tracker.ZooKeeperTreeTracker doesn't appear to handle the event of a

Re: Replicated LevelDB status (production worthy?)

Working my way through the code and the debug log from the test, I see that the ZooKeeper group is getting emptied out after session expiration occurs: before the timeout: 2015-03-10 12:09:50,614 | DEBUG | ActiveMQ Task | ZooKeeper group for 01 changed: Map(foo -

Re: Replicated LevelDB status (production worthy?)

On Wed, Mar 4, 2015 at 12:29 PM, James A. Robinson j...@highwire.org wrote: Thanks. I'm pretty sure AMQ-5082 is what I'm seeing on 5.11.1. I'll see if I can get the cycles to set up a unit test to replicate the issue. I think I've got the use a case represented for

Re: Replicated LevelDB status (production worthy?)

folks, While testing out ActiveMQ I've been building clusters VirtualBox. I've been spinning up two 3-node Replicated LevelDB stores on my laptop. I've noticed that the clusters can sometimes get into a state where none of the nodes is the master. It appears to me as though it's an issue

Re: Replicated LevelDB status (production worthy?)

). On Mar 3, 2015 8:23 AM, James A. Robinson jim.robin...@gmail.com wrote: Hi folks, While testing out ActiveMQ I've been building clusters VirtualBox. I've been spinning up two 3-node Replicated LevelDB stores on my laptop. I've noticed that the clusters can sometimes get into a state

Replicated LevelDB status (production worthy?)

Hi folks, While testing out ActiveMQ I've been building clusters VirtualBox. I've been spinning up two 3-node Replicated LevelDB stores on my laptop. I've noticed that the clusters can sometimes get into a state where none of the nodes is the master. It appears to me as though it's an issue

JDBC vs Replicated LevelDB data store performance

We are currently selecting a suitable data store for our ActiveMQ implementation.Are there any benchmarks or performance comparisons for the JDBC and replicated LevelDB data store options, other than LevelDB is more performant? -- View this message in context: http://activemq.2283324.n4

Re: Replicated LevelDB cluster: failed to page in queue messages

- org.apache.activemq.broker.region.cursors.QueueStorePrefetch@72e4521c :testpt,batchResetNeeded=false,storeHasMessages=true,size=2516,cacheEnabled=false,maxBatchSize:200,hasSpace:true - Failed to fill batch -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB

Re: Client side changes required to use replicated levelDB

As per http://activemq.apache.org/replicated-leveldb-store.html there is no additional requirements on the client. Clients still need to know the location and address of each broker and specify it inside the failover protocol (or use other forms of discovery such as multicast). In JBoss Fuse

Replicated LevelDB

Ref http://activemq.apache.org/replicated-leveldb-store.html Is this page actually detailing that Zookeeper will maintain one master BROKER and that writes through this broker will be replicated to slave brokers? I read - interpreted - the URL and title as being about leveldb data being

Re: Replicated LevelDB Store port over encrypted connection

I'm having a little trouble connecting the dots with the source code, but it does appear that setting is using an ActiveMQ transport connection. Can you try using ssl: and report back the results? -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-Store

Replicated LevelDB cluster: failed to page in queue messages

-- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-cluster-failed-to-page-in-queue-messages-tp4688222.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

ActiveMQ stucks with replicated LevelDB on startup.

Hi I've just setup a three ActiveMQ 5.10 nodes in master/slave configuration with replicated LevelDB. I've also setup the Zookeeper server in the same nodes. Zookeeper seems running pretty much okay as far I can see. When I crank up the first ActiveMQ node, it stops waiting for another node

Re: ActiveMQ stucks with replicated LevelDB on startup.

Never mind. There is a issue already open against it. Fixed on 5.11 https://issues.apache.org/jira/browse/AMQ-5105 -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-stucks-with-replicated-LevelDB-on-startup-tp4687634p4687662.html Sent from the ActiveMQ - User

Re: ActiveMQ stucks with replicated LevelDB on startup.

in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-stucks-with-replicated-LevelDB-on-startup-tp4687634p4687662.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: ActiveMQ replicated leveldb update ordering with zookeeper.

Did anyone get a chance to look at this ? -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-update-ordering-with-zookeeper-tp4686932p4687014.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Replicated LevelDB : Manually copying data from one leveldb store to another

Activemq vendors, please respond about above observations. Thanks, Anuj -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-Manually-copying-data-from-one-leveldb-store-to-another-tp4686931p4686950.html Sent from the ActiveMQ - User mailing list archive

Re: ActiveMQ replicated leveldb update ordering with zookeeper.

Please respond . -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-replicated-leveldb-update-ordering-with-zookeeper-tp4686932p4686961.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Replicated LevelDB : Manually copying data from one leveldb store to another

Hi, Is it possible to copy data from leveldb store of one broker to another broker while using replicated leveldb. For ex. : Let's say 3 brokers are running fine and replicating the data. I suddenly stop one slave broker. After some time before starting the slave Can I manually copy leveldb

ActiveMQ replicated leveldb update ordering with zookeeper.

? As mentioned here http://activemq.apache.org/replicated-leveldb-store.html that the slave with the latest update gets promoted to become the master. How does zk knows which broker has the latest update ? Does zk get notifications from the slaves for each update ? Thanks, Steven -- View this message

sync option in replicated leveldb configuration

this message to other slaves. what does the parameter signifies ? Thanks, Steven -- View this message in context: http://activemq.2283324.n4.nabble.com/sync-option-in-replicated-leveldb-configuration-tp4686934.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Replicated LevelDB : Manually copying data from one leveldb store to another

of one broker to another broker while using replicated leveldb. For ex. : Let's say 3 brokers are running fine and replicating the data. I suddenly stop one slave broker. After some time before starting the slave Can I manually copy leveldb directory of master and then start the slave ? (I am

Re: Zookeeper for replicated LevelDB

From the documentation here http://activemq.apache.org/replicated-leveldb-store.html : All messaging operations which require a sync to disk will wait for the update to be replicated to a quorum of the nodes before completing. So if you configure the store with replicas=3 then the quorum size

Re: Zookeeper for replicated LevelDB

Please respond -- View this message in context: http://activemq.2283324.n4.nabble.com/Zookeeper-for-replicated-LevelDB-tp4686797p4686882.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Zookeeper for replicated LevelDB

(let say 3) ActiveMQ brokers belong to same environment and fighting to become master. Thanks, Anuj -- View this message in context: http://activemq.2283324.n4.nabble.com/Zookeeper-for-replicated-LevelDB-tp4686797p4686824.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Zookeeper for replicated LevelDB

Hi, I have gone through http://activemq.apache.org/replicated-leveldb-store.html. What does zookeeper do other than election of master from ActiveMQ brokers ? Who takes care of replicating data from master broker to other slaves ? Thanks, Anuj -- View this message in context: http

Re: Zookeeper for replicated LevelDB

://activemq.apache.org/replicated-leveldb-store.html. What does zookeeper do other than election of master from ActiveMQ brokers ? Who takes care of replicating data from master broker to other slaves ? Thanks, Anuj -- View this message in context: http://activemq.2283324.n4.nabble.com

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

-Slave-with-Replicated-LevelDB-Store-tp4686450p4686583.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Client side changes required to use replicated levelDB

Hi, Does clients need to make any changes or include any jars to connect to ActiveMQ broker nodes which are using replicated levelDB. Since broker instances connect to zookeeper to use replicated leveldb so just curious to know are there any changes required on client side as well apart from

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

tests by changing the GC to G1 hopefully avoiding a full GC and the demotion of the broker to slave forcing a failover. -- View this message in context: http://activemq.2283324.n4.nabble.com/Potential-Bug-in-Master-Slave-with-Replicated-LevelDB-Store-tp4686450p4686576.html Sent from the ActiveMQ

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

Quick update: I have enabled G1GC for the JVM running the broker and since then had no problem again. The master broker stays master even under very heavy load. So, my suggestion and recommendation when using replicated LevelDB would be to use the G1 garbage collector significantly reducing stop

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

the access via JNI may be less optimal than using an embedded Java (or Scala) engine. -- View this message in context: http://activemq.2283324.n4.nabble.com/Potential-Bug-in-Master-Slave-with-Replicated-LevelDB-Store-tp4686450p4686583.html Sent from the ActiveMQ - User mailing list archive

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

-Bug-in-Master-Slave-with-Replicated-LevelDB-Store-tp4686450p4686583.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

exactly is going on, but it appears that something is wrong with the replicated LevelDB which needs more investigation. -- View this message in context: http://activemq.2283324.n4.nabble.com/Potential-Bug-in-Master-Slave-with-Replicated-LevelDB-Store-tp4686450p4686548.html Sent from the ActiveMQ

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

and reporting to have been started as slave. I don't know what exactly is going on, but it appears that something is wrong with the replicated LevelDB which needs more investigation. -- View this message in context: http://activemq.2283324.n4.nabble.com/Potential-Bug-in-Master-Slave

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

://activemq.2283324.n4.nabble.com/Potential-Bug-in-Master-Slave-with-Replicated-LevelDB-Store-tp4686450p4686488.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

raising a false alarm. -- View this message in context: http://activemq.2283324.n4.nabble.com/Potential-Bug-in-Master-Slave-with-Replicated-LevelDB-Store-tp4686450p4686492.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

the issue shows up again. Until then, sorry for potentially raising a false alarm. -- View this message in context: http://activemq.2283324.n4.nabble.com/Potential-Bug-in-Master-Slave-with-Replicated-LevelDB-Store-tp4686450p4686492.html Sent from the ActiveMQ - User mailing list archive

Potential Bug in Master-Slave with Replicated LevelDB Store

All nodes (ZK, AMQ) are running on CentOS 6.5 64bit with the latest OpenJDK. Three broker form an active/passive cluster using replicated LevelDB store. I have installed native LevelDB 1,7.0 accessing it via the JNDI driver. The two cluster are forming a network of broker. The networkConnectors

Re: Potential Bug in Master-Slave with Replicated LevelDB Store

using replicated LevelDB store. I have installed native LevelDB 1,7.0 accessing it via the JNDI driver. The two cluster are forming a network of broker. The networkConnectors are defined in the activemq.xml files in only one cluster as duplex connections. Here is my test case and the situation

Re: Replicated LevelDB store issues

. -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-store-issues-tp4685793p4685838.html Sent from the ActiveMQ - User mailing list archive at Nabble.com. -- Founder/CEO Spinn3r.com Location: *San Francisco, CA* blog: http://burtonator.wordpress.com

Re: Replicated LevelDB store issues

://activemq.2283324.n4.nabble.com/Replicated-LevelDB-store-issues-tp4685793p4685838.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Replicated LevelDB store issues

zkPath=/activemq/leveldb-stores / /persistenceAdapter -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-store-issues-tp4685793.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Replicated LevelDB store issues

-stores / /persistenceAdapter -- View this message in context: http://activemq.2283324.n4.nabble.com/Replicated-LevelDB-store-issues-tp4685793.html Sent from the ActiveMQ - User mailing list archive at Nabble.com. -- Founder/CEO Spinn3r.com Location: *San

Re: Replicated LevelDB store issues

.nabble.com/Replicated-LevelDB-store-issues-tp4685793.html Sent from the ActiveMQ - User mailing list archive at Nabble.com. -- Founder/CEO Spinn3r.com Location: *San Francisco, CA* blog: http://burtonator.wordpress.com … or check out my Google+ profile https://plus.google.com

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