Hello ,
i am facing a strange problem with neo4j.
i am running some jar that is importing the data in neo4j . i am running this jar using crontab.
i have established the connection using this jar and inserting the data in neo4j. but after some 1 miilion records ,it is reconnecting and and asking for username password , when i give username password then giving below error ServiceUnavailable: Failed to establish connection in 5000ms and my jar has been stopped . then i have to restart neo4j and have to run jar again
this is happening again and again.
Logs:
m giving 1024m as heap size
Exception in thread "neo4j.Scheduler-1" java.lang.OutOfMemoryError: Java heap space
at org.neo4j.kernel.impl.scheduler.ThreadPool.submit(ThreadPool.java:53)
at org.neo4j.kernel.impl.scheduler.ThreadPoolManager.submit(ThreadPoolManager.java:48)
at org.neo4j.kernel.impl.scheduler.ScheduledJobHandle.submitIfRunnable(ScheduledJobHandle.java:106)
at org.neo4j.kernel.impl.scheduler.TimeBasedTaskScheduler.scheduleDueTasks(TimeBasedTaskScheduler.java:98)
at org.neo4j.kernel.impl.scheduler.TimeBasedTaskScheduler.tick(TimeBasedTaskScheduler.java:83)
at org.neo4j.kernel.impl.scheduler.TimeBasedTaskScheduler.run(TimeBasedTaskScheduler.java:71)
at java.lang.Thread.run(Thread.java:748)
what is problem here .?? is neo4j can not handle this much huge data ??
after increasing the heap size to 3 gb and pagecache size 1600 mb then i start monitor system.
connection failure happening when we have below data
Store Sizes
Count Store 3.50 KiB
Label Store 16.02 KiB
Index Store 26.91 MiB
Schema Store 8.01 KiB
Array Store 8.01 KiB
Logical Log 217.65 MiB
Node Store 6.09 MiB
Property Store 172.53 MiB
Relationship Store 28.93 MiB
String Store 2.62 MiB
Total Store Size 704.80 MiB
Page Cache
Faults 30378
Evictions 0
File Mappings 100
Bytes Read 247965093
Flushes 29
Eviction Exceptions 0
File Unmappings 55
Bytes Written 237568
Hit Ratio 97.22%
Usage Ratio 9.16%
Transactions
Last Tx Id 972227
Current 1
Peak 3
Opened 1221
Committed 1118