Details
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Bug
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Status: Resolved (View Workflow)
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Major
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Resolution: Fixed
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Meridian-2019.1.1, 25.1.1
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None
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Security Level: Default (Default Security Scheme)
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None
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Horizon 2019 - December 11th, Horizon 2020 - January 8th, Horizon 2020 - January 22nd
Description
Found ALEC blocked on the following stack when using the direct datasource:
"ALEC Inventory Datasource Initializer" #809 prio=5 os_prio=0 tid=0x00007f7b59f06800 nid=0x194fd waiting for monitor entry [0x00007f7abb6ac000]
java.lang.Thread.State: BLOCKED (on object monitor)
at org.opennms.netmgt.enlinkd.common.TopologyUpdater.getTopology(TopologyUpdater.java:221)
- waiting to lock <0x00000005d01f3030> (a org.opennms.netmgt.enlinkd.BridgeOnmsTopologyUpdater)
at org.opennms.netmgt.topologies.service.impl.OnmsTopologyDaoInMemoryImpl.lambda$getTopologies$0(OnmsTopologyDaoInMemoryImpl.java:64)
at org.opennms.netmgt.topologies.service.impl.OnmsTopologyDaoInMemoryImpl$$Lambda$1103/1488677422.accept(Unknown Source)
at java.util.HashMap.forEach(HashMap.java:1288)
at org.opennms.netmgt.topologies.service.impl.OnmsTopologyDaoInMemoryImpl.getTopologies(OnmsTopologyDaoInMemoryImpl.java:64)
- locked <0x00000005c3f75178> (a java.util.HashMap)
at Proxy51f48aff_5cde_4f2a_be3b_c19d52f4242e.getTopologies(Unknown Source)
at org.opennms.features.apilayer.topology.EdgeDaoImpl.getEdges(EdgeDaoImpl.java:73)
at org.opennms.features.apilayer.topology.EdgeDaoImpl.getEdges(EdgeDaoImpl.java:99)
at Proxy76adca50_253d_4e68_8905_1fc31437048e.getEdges(Unknown Source)
at org.opennms.alec.datasource.opennms.jvm.DirectInventoryDatasource.doInit(DirectInventoryDatasource.java:256)
at org.opennms.alec.datasource.opennms.jvm.DirectInventoryDatasource.lambda$initAsync$0(DirectInventoryDatasource.java:222)
at org.opennms.alec.datasource.opennms.jvm.DirectInventoryDatasource$$Lambda$1070/1722315937.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
getTopology is defined as:
@Override
public synchronized OnmsTopology getTopology() {
return m_topology.clone();
}
The runDiscovery method is also synchronized:
@Override
public synchronized void runDiscovery() {
Meaning that calls to retrieve the current topology are completely blocked until discovery completes.
