Those messages appear only if the second node is online and replication is
active ...
Am Sonntag, 20. April 2014 22:45:33 UTC+2 schrieb OK:
>
> Another problem: if I want to access the plocal DB and the server is
> running, I get the following log-messages in JAVA and the program is
> running in an endless loop:
>
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> WARNING: segment file 'database.ocf' was not closed correctly last time
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> WARNING: Storage TestDB was not closed properly. Will try to restore from
> write ahead log.
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> INFO: Looking for last checkpoint...
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> INFO: FULL checkpoint found.
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> INFO: Data restore procedure from full checkpoint is started. Restore is
> performed from LSN OLogSequenceNumber{segment=0, position=15911}
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> WARNING: Record
> com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OCheckpointEndRecord{lsn=OLogSequenceNumber{segment=0,
>
> position=15935}} will be skipped during data restore.
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> INFO: Storage data restore was completed
> Apr 20, 2014 10:40:29 PM com.orientechnologies.common.log.OLogManager log
> INFO: Wait till indexes restore after crash was finished.
>
> How could I solve that? I've tried the access with:
>
> OObjectDatabaseTx db = new
> OObjectDatabaseTx("plocal:D:/orientdb-community-1.7-rc2/databases/TestDB").open("admin",
>
> "admin");
>
> or
>
> OObjectDatabaseTx db =
> OObjectDatabasePool.global().acquire("plocal:D:/orientdb-community-1.7-rc2/databases/TestDB","admin",
>
> "admin");
>
> but without success.
>
>
>
> Am Sonntag, 20. April 2014 20:28:24 UTC+2 schrieb OK:
>>
>> Hi,
>> thanks for your answer. Where can I get the latest snapshot? I use 1.7
>> RC2 and I've downloaded it on the 1st of April 2014.
>> Ok, when I set hotAlignment = false, I receive the latest update. But
>> I've tested sth.: let's say one node gets "offline" because there's no more
>> network connection. Then let's suppose I create some local changes at the
>> same property for both nodes, for example: NODE1: Name = test; @Version =
>> 1; NODE2: Name = noTest; @Version = 1; When the network connection returns,
>> then I received the following messages in a loop:
>>
>> WARN [WaitNotifyServiceImpl$WaitingOp] [161.228.100.233]:2434 class
>> com.hazelcast.spi.exception.WrongTargetException: WrongTarget!
>> this:Address[161.228.100.233]:2434, target:Address[161.228.100.221]:2434,
>> partitionId: 166, replicaIndex: 0, operation:
>> com.hazelcast.spi.impl.WaitNotifyServiceImpl$WaitingOp, service:
>> hz:impl:queueService
>>
>> Is this because I changed the same property at two nodes? How could I
>> configure the bevaiour of the merging? I would like to be informed when
>> there's such a conflict: either I would like the user to solve that issue
>> manually or the "newest" (by timestamp) version should replace the older
>> (by timestamp) one? Where could I configure that? Can I change that by
>> coding?
>> When I restart the whole server than the restarted node gets the data
>> from the running one ... but as I said, I would like to have the "newest"
>> (by timestamp) data or that the user could solve that manually ... How
>> could I achieve that?
>>
>> Thanks.
>>
>> Am Sonntag, 20. April 2014 10:54:27 UTC+2 schrieb Lvc@:
>>>
>>> Hi,
>>> Sorry for such delay on answer. We're improving the distributed part in
>>> these days by enriching the documentation with new example for replication
>>> and sharding. Stay tuned!
>>>
>>> In the meanwhile may you try last 1.7-SNAPSHOT? We fixed some issues
>>> about replication. And if the synchronization with offline nodes has
>>> problem, please report issues like you did, but to avoid to be stuck with
>>> such problems set hotAlignment = false in distributed-config.json file.
>>> Every time the node will return back online, the database is transparently
>>> copied to the new server.
>>>
>>> Lvc@
>>>
>>>
>>>
>>> On 19 April 2014 11:16, OK <[email protected]> wrote:
>>>
>>>> Hi,
>>>>
>>>> I really would like to use OrientDB for my project but I think that it
>>>> is compared to other databases not well documented!!
>>>> The functions like auto-deploy of databases and auto-recognition of new
>>>> member nodes are really awesome.
>>>> Moreover the database is very fast and the development with Java is
>>>> very easy.
>>>> But the distributed section with replication etc. and the configuration
>>>> of a distributed scenario like my described one is absolutely horror ...
>>>> There are no examples of configuration files and the possible options
>>>> are not described ...
>>>> It's really urgent for me to have a working database for my project.
>>>> Because of that I tried to use DB4o yesterday and I successfully tested my
>>>> described replicated scenario ... and it worked in less than 2 hours ...
>>>> but you have to code every single step.
>>>> With OrientDB, coding is easier but I tried three whole days to
>>>> configure the distributed replication scenario without success!!!
>>>> So please help me with the config-files or please tell me if my
>>>> scenario is possible to configure with OrientDB.
>>>>
>>>> Once again my scenario:
>>>>
>>>> local OrientDB: storing "POJOS" (documents) and is sometimes offline
>>>>
>>>> When the local DB has a network connection, it should be replicated
>>>> with a central OrientDB on a central server that is always online.
>>>> The central server also gets some data from other machines.
>>>> Because of that I need to have a bi-directional asynchronous,
>>>> multi-master (peer-to-peer) replication configuration with some nodes that
>>>> can go "offline" and gets the up-to-date data when they return back
>>>> "online".
>>>> Which configuration files do I need to configure???
>>>>
>>>> I hope that someone could help me soon or give me some hints.
>>>>
>>>> Thanks.
>>>>
>>>>
>>>> --
>>>>
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>>>>
>>>
>>>
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