Hi Amir,
Could you show us the distributed-config.json file from your database
folder?
Thanks!
-Colin
On Wednesday, April 29, 2015 at 7:42:55 PM UTC-5, Amir Khawaja wrote:
>
> Is there a best practice around configuration for a cluster of two nodes?
> Should it be three nodes minimum? The cluster nodes are all in the same
> Azure region with latency of < 0.2ms on average. This occurred four times
> today already. Here is my default-distributed-db-config.json file:
>
> {
> "autoDeploy": true,
> "hotAlignment": false,
> "executionMode": "synchronous",
> "resyncEvery": 15,
> "readQuorum": 1,
> "writeQuorum": 2,
> "failureAvailableNodesLessQuorum": false,
> "readYourWrites": true,
> "clusters": {
> "internal": {
> },
> "index": {
> },
> "*": {
> "servers" : [ "<NEW_NODE>" ]
> }
> }
> }
>
> Any assistance is appreciated. Thank you.
>
> Amir.
>
>
> On Wednesday, April 29, 2015 at 8:36:30 AM UTC-5, Amir Khawaja wrote:
>>
>> Hi Everyone,
>>
>> I have a 2-node cluster running OrientDB 2.0.8 Community Edition. The
>> following error appeared in the log early this morning and the database
>> stopped responding to requests. Any thoughts? Is this a bug?
>>
>> 2015-04-29 12:24:20:606 WARNING [orientdb01] detected 1 node(s) in
>> timeout or in conflict and quorum (2) has not been reached, rolling back
>> changes for request (id=860294 from=orientdb01 task=tx userName=)
>> [ODistributedResponseManager]
>> 2015-04-29 12:24:20:606 WARNING [orientdb01] Quorum 2 not reached for
>> request (id=860294 from=orientdb01 task=tx userName=). Timeout=8ms Servers
>> in timeout/conflict are:
>> - orientdb02: [#36:95960 v.5090]
>> Received: {orientdb01=[#36:95980 v.4302], orientdb02=[#36:95960 v.5090]}
>> [ODistributedResponseManager]
>> 2015-04-29 12:24:20:606 WARNING [orientdb01] sending undo message for
>> request (id=860294 from=orientdb01 task=tx userName=) to server orientdb01
>> [ODistributedResponseManager]
>> 2015-04-29 12:24:20:610 WARNING [orientdb01] sending undo message for
>> request (id=860294 from=orientdb01 task=tx userName=) to server orientdb02
>> [ODistributedResponseManager]Sent run-time exception to the client /
>> 10.0.0.17:35030:
>> com.orientechnologies.orient.server.distributed.ODistributedException:
>> Error on executing distributed request (id=860294 from=orientdb01 task=tx
>> userName=) against database 'vis.[visitor]' to nodes [orientdb01,
>> orientdb02]
>> com.orientechnologies.orient.server.distributed.ODistributedException:
>> Error on executing distributed request (id=860294 from=orientdb01 task=tx
>> userName=) against database 'vis.[visitor]' to nodes [orientdb01,
>> orientdb02]
>> at
>> com.orientechnologies.orient.server.hazelcast.OHazelcastDistributedDatabase.send2Nodes(OHazelcastDistributedDatabase.java:194)
>> at
>> com.orientechnologies.orient.server.hazelcast.OHazelcastPlugin.sendRequest(OHazelcastPlugin.java:365)
>> at
>> com.orientechnologies.orient.server.distributed.ODistributedStorage.commit(ODistributedStorage.java:902)
>> at
>> com.orientechnologies.orient.core.tx.OTransactionOptimistic.doCommit(OTransactionOptimistic.java:483)
>> at
>> com.orientechnologies.orient.core.tx.OTransactionOptimistic.commit(OTransactionOptimistic.java:147)
>> at
>> com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2406)
>> at
>> com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2376)
>> at
>> com.orientechnologies.orient.core.command.script.OCommandExecutorScript.executeSQLScript(OCommandExecutorScript.java:245)
>> at
>> com.orientechnologies.orient.core.command.script.OCommandExecutorScript.executeSQL(OCommandExecutorScript.java:146)
>> at
>> com.orientechnologies.orient.core.command.script.OCommandExecutorScript.executeInContext(OCommandExecutorScript.java:91)
>> at
>> com.orientechnologies.orient.core.command.script.OCommandExecutorScript.execute(OCommandExecutorScript.java:81)
>> at
>> com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.executeCommand(OAbstractPaginatedStorage.java:1189)
>> at
>> com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.command(OAbstractPaginatedStorage.java:1178)
>> at
>> com.orientechnologies.orient.server.distributed.ODistributedStorage.command(ODistributedStorage.java:248)
>> at
>> com.orientechnologies.orient.core.command.OCommandRequestTextAbstract.execute(OCommandRequestTextAbstract.java:63)
>> at
>> com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.command(ONetworkProtocolBinary.java:1173)
>> at
>> com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.executeRequest(ONetworkProtocolBinary.java:380)
>> at
>> com.orientechnologies.orient.server.network.protocol.binary.OBinaryNetworkProtocolAbstract.execute(OBinaryNetworkProtocolAbstract.java:217)
>> at
>> com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:69)
>> Caused by:
>> com.orientechnologies.orient.server.distributed.ODistributedException:
>> Quorum 2 not reached for request (id=860294 from=orientdb01 task=tx
>> userName=). Timeout=8ms Servers in timeout/conflict are:
>> - orientdb02: [#36:95960 v.5090]
>> Received: {orientdb01=[#36:95980 v.4302], orientdb02=[#36:95960 v.5090]}
>> at
>> com.orientechnologies.orient.server.distributed.ODistributedResponseManager.manageConflicts(ODistributedResponseManager.java:576)
>> at
>> com.orientechnologies.orient.server.distributed.ODistributedResponseManager.getFinalResponse(ODistributedResponseManager.java:340)
>> at
>> com.orientechnologies.orient.server.hazelcast.OHazelcastDistributedDatabase.waitForResponse(OHazelcastDistributedDatabase.java:364)
>> at
>> com.orientechnologies.orient.server.hazelcast.OHazelcastDistributedDatabase.send2Nodes(OHazelcastDistributedDatabase.java:191)
>> ... 18 more
>>
>>
>> Amir.
>>
>
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