Examples of org.apache.slider.server.appmaster.state.NodeEntry

Package org.apache.slider.server.appmaster.state

Examples of org.apache.slider.server.appmaster.state.NodeEntry

org.apache.slider.server.appmaster.state.NodeEntry
Information about the state of a role on a specific node instance. No fields are synchronized; sync on the instance to work with it The two fields `releasing` and `requested` are used to track the ongoing state of YARN requests; they do not need to be persisted across freeze/thaw cycles. They may be relevant across AM restart, but without other data structures in the AM, not enough to track what the AM was up to before it was restarted. The strategy will be to ignore unexpected allocation responses (which may come from pre-restart) requests, while treating unexpected container release responses as failures. The `active` counter is only decremented after a container release response has been received. Accesses are synchronized.

      long count = 0;
      //now for every role history entry, write out its record
      Collection<NodeInstance> instances = history.cloneNodemap().values();
      for (NodeInstance instance : instances) {
        for (int role = 0; role < roles; role++) {
          NodeEntry nodeEntry = instance.get(role);


          if (nodeEntry != null) {
            NodeEntryRecord ner = build(nodeEntry, role, instance.hostname);
            record = new RoleHistoryRecord(ner);
            writer.write(record, encoder);

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            break;
          }
          records++;
          NodeEntryRecord nodeEntryRecord = (NodeEntryRecord) entry;
          Integer roleId = nodeEntryRecord.getRole();
          NodeEntry nodeEntry = new NodeEntry(roleId);
          nodeEntry.setLastUsed(nodeEntryRecord.getLastUsed());
          if (nodeEntryRecord.getActive()) {
            //if active at the time of save, make the last used time the save time
            nodeEntry.setLastUsed(saved);
          }


          String hostname =
            SliderUtils.sequenceToString(nodeEntryRecord.getHost());
          NodeInstance instance = history.getOrCreateNodeInstance(hostname);

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Related Classes of org.apache.slider.server.appmaster.state.NodeEntry

org.apache.slider.server.avro.RoleHistoryWriter

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