Hi,
We setup ArangoDB in DCOS machine with memory of 90 GB and Disk space in
instance store with 320 GB.
However on reaching close to about 50 GB data size in total, ArangoDB hangs
up and we are not able to browse the
collections in the UI.
We we tried killing all the DB servers, new DB servers are launched and the
system goes back to normaland the data is recovered. However once we
insert more data using arangoimp, the same thing happens.
The logs in the erroneus DB-servers are provided below :
DBserver3:
2017-01-11T13:53:20Z [1] ERROR synchronization of local shard
'_system/s100018' for central '_system/100016' failed:
{"errorNum":4,"errorMessage":"cannot sync from remote endpoint: internal
error: internal error"}
2017-01-11T13:53:20Z [1] INFO {replication} connected to master at tcp://
172.30.0.212:1026, id 78847858507331, version 3.1, last log tick 58678866
Coordinator:
2017-01-11T14:30:47Z [1] ERROR {cluster} ClusterComm::performRequests: got
no answer from shard:s100018:/_db/_system/_api/collection/s100018/count
with error 4
2017-01-11T14:30:47Z [1] WARNING catch error in historian: ArangoError:
could not determine number of documents in collection (while optimizing
plan)\n at Error (native)\n at ArangoStatement.execute
(/usr/share/arangodb3/js/server/modules/@arangodb/
arango-statement.js:81:16)\n at ArangoDatabase._query
(/usr/share/arangodb3/js/server/modules/@arangodb/arango-database.js:90:45)\n
at lastEntry
(/usr/share/arangodb3/js/server/modules/@arangodb/statistics.js:109:19)\n
at Object.exports.historian (/usr/share/arangodb3/js/
server/modules/@arangodb/statistics.js:456:19)\n at eval (eval at
undefined, <anonymous>:3:54)\n at eval (eval at undefined,
<anonymous>:3:70)
2017-01-11T14:30:50Z [1] ERROR Couldn't read statistics response: undefined
2017-01-11T14:30:50Z [1] ERROR Service "/_admin/aardvark" encountered error
500 while handling GET
http://52.91.225.193/_db/AdtheorentDB/_admin/aardvark/statistics/coordshort
2017-01-11T14:30:50Z [1] ERROR SyntaxError: Unexpected token u in JSON at
position 0
We tried mounting a stable version of arangodb 3.0.10 within the docker
image in DCOS, but it didn't work. Please can you suggest the
best way to work with a 3.0 version in DCOS.
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