Stardog server exits without logging anything

Support
1

In the middle of loading large datasets, I get this:

WARN 2018-08-29 04:15:46,509 [main] com.complexible.stardog.protocols.http.client.BaseHttpClient:retryRequest(176): No response from server, will retry (tries: 1)
Connection refused (Connection refused)
Server is no longer running, and has to be started again.
The last lines in the stardog.log, however, show none of the issues:
Memory Pools Info
Name: Code Cache
Usage: init = 2555904(2496K) used = 16008704(15633K) committed = 16580608(16192K) max = 251658240(245760K)
Collection Usage: null
Peak Usage: init = 2555904(2496K) used = 16326784(15944K) committed = 16580608(16192K) max = 251658240(245760K)
Type: Non-heap memory
Memory Manager Names: [CodeCacheManager]
Name: Metaspace
Usage: init = 0(0K) used = 47252768(46145K) committed = 48889856(47744K) max = -1(-1K)
Collection Usage: null
Peak Usage: init = 0(0K) used = 47252768(46145K) committed = 48889856(47744K) max = -1(-1K)
Type: Non-heap memory
Memory Manager Names: [Metaspace Manager]
Name: Compressed Class Space
Usage: init = 0(0K) used = 6043896(5902K) committed = 6422528(6272K) max = 1073741824(1048576K)
Collection Usage: null
Peak Usage: init = 0(0K) used = 6044952(5903K) committed = 6422528(6272K) max = 1073741824(1048576K)
Type: Non-heap memory
Memory Manager Names: [Metaspace Manager]
Name: PS Eden Space
Usage: init = 3221225472(3145728K) used = 2469883032(2411995K) committed = 3093299200(3020800K) max = 3093299200(3020800K)
Collection Usage: init = 3221225472(3145728K) used = 0(0K) committed = 3093299200(3020800K) max = 3093299200(3020800K)
Peak Usage: init = 3221225472(3145728K) used = 3221225472(3145728K) committed = 3221225472(3145728K) max = 3295674368(3218432K)
Type: Heap memory
Memory Manager Names: [PS MarkSweep, PS Scavenge]
Name: PS Survivor Space
Usage: init = 536870912(524288K) used = 526909440(514560K) committed = 600834048(586752K) max = 600834048(586752K)
Collection Usage: init = 536870912(524288K) used = 526909440(514560K) committed = 600834048(586752K) max = 600834048(586752K)
Peak Usage: init = 536870912(524288K) used = 695928800(679617K) committed = 1162346496(1135104K) max = 1162346496(1135104K)
Type: Heap memory
Memory Manager Names: [PS MarkSweep, PS Scavenge]
Name: PS Old Gen
Usage: init = 8589934592(8388608K) used = 3180993968(3106439K) committed = 8589934592(8388608K) max = 8589934592(8388608K)
Collection Usage: init = 8589934592(8388608K) used = 1301960376(1271445K) committed = 8589934592(8388608K) max = 8589934592(8388608K)
Peak Usage: init = 8589934592(8388608K) used = 8566277632(8365505K) committed = 8589934592(8388608K) max = 8589934592(8388608K)
Type: Heap memory
Memory Manager Names: [PS MarkSweep]

2

In our experience such silent crashes usually indicate that the server has been terminated externally, for example, by a tool like the Linux OOM killer. Can you provide details of your deployment and/or grep the system logs to see if it could be the case?

Best,
Pavel

3

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