Docker 1.7.5 image ES, less than 2000 documents, imported at rate of less 2 per second, OOMs JVM heap

influencer_mapping.txt

#<Elasticsearch::Model::Indexing::Mappings:0x00559a10b6e180
 @mapping=
  {:created_at=>{:type=>"date"},
   :updated_at=>{:type=>"date"},
   :wordsmaster_ids=>{:type=>"integer", :doc_values=>true},
   :scores_updated_at=>{:type=>"date"},
   :avg_total_score=>{:type=>"float"},
   :avg_visibility_score=>{:type=>"float"},
   :avg_engagement_score=>{:type=>"float"},
   :avg_presence_score=>{:type=>"float"},
   :total_scores=>{:type=>"float"},
   :visibility_scores=>{:type=>"float"},
   :engagement_scores=>{:type=>"float"},
   :presence_scores=>{:type=>"float"},
   :wordsmaster_total_scores=>{:type=>"object", :dynamic=>true},
   :wordsmaster_visibility_scores=>{:type=>"object", :dynamic=>true},
   :wordsmaster_engagement_scores=>{:type=>"object", :dynamic=>true},
   :wordsmaster_presence_scores=>{:type=>"object", :dynamic=>true},
   :wordsmaster_mentions_count=>{:type=>"object", :dynamic=>true},
   :project_total_scores=>{:type=>"object", :dynamic=>true},
   :project_visibility_scores=>{:type=>"object", :dynamic=>true},
   :project_engagement_scores=>{:type=>"object", :dynamic=>true},
   :project_presence_scores=>{:type=>"object", :dynamic=>true},
   :project_mentions_count=>{:type=>"object", :dynamic=>true},
   :project_wordsmaster_ids=>{:type=>"object", :dynamic=>true},
   :project_wordsmasters_count=>{:type=>"object", :dynamic=>true},
   :project_latest_mention_at=>{:type=>"object", :dynamic=>true},
   :project_latest_wordsmaster_mention=>{:type=>"object", :dynamic=>true},
   :project_latest_wordsmaster_mention_at=>{:type=>"object", :dynamic=>true},
   :project_sources=>{:type=>"object", :dynamic=>true},
   :project_campaign_stage_ids=>{:type=>"object", :dynamic=>true},
   :mentions_sentiments=>
    {:type=>"nested",
     :properties=>
      {:sentiment=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :quantity=>{:type=>"integer"}}},
   :wordsmaster_mentions_sentiments=>
    {:type=>"nested",
     :properties=>
      {:wordsmaster_id=>
        {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :sentiments=>
        {:type=>"nested",
         :properties=>
          {:sentiment=>
            {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
           :quantity=>{:type=>"integer"}}}}},
   :project_mentions_sentiments=>
    {:type=>"nested",
     :properties=>
      {:project_id=>{:type=>"integer"},
       :sentiments=>
        {:type=>"nested",
         :properties=>
          {:sentiment=>
            {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
           :quantity=>{:type=>"integer"}}}}},
   :mentions_languages=>
    {:type=>"nested",
     :properties=>
      {:language=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :quantity=>{:type=>"integer"}}},
   :wordsmaster_mentions_languages=>
    {:type=>"nested",
     :properties=>
      {:wordsmaster_id=>
        {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :languages=>
        {:type=>"nested",
         :properties=>
          {:language=>
            {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
           :quantity=>{:type=>"integer"}}}}},
   :project_mentions_languages=>
    {:type=>"nested",
     :properties=>
      {:project_id=>{:type=>"integer"},
       :languages=>
        {:type=>"nested",
         :properties=>
          {:language=>
            {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
           :quantity=>{:type=>"integer"}}}}},
   :name=>{:type=>"string"},
   :company=>{:type=>"string", :analyzer=>"simple"},
   :gender=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :language=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :profile_url=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :profile_ids=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :profiles_count=>{:type=>"integer"},
   :profile_services=>
    {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :profiles=>
    {:type=>"nested",
     :dynamic=>true,
     :properties=>
      {:id=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :service=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :service_id=>
        {:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :username=>{:type=>"string", :analyzer=>"keyword"},
       :name=>{:type=>"string", :analyzer=>"keyword"},
       :description=>{:type=>"string", :analyzer=>"keyword"},
       :url=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :image_url=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
       :depth=>{:type=>"integer", :doc_values=>true},
       :score=>{:type=>"double", :doc_values=>true},
       :created_at=>{:type=>"date", :doc_values=>true},
       :updated_at=>{:type=>"date", :doc_values=>true},
       :enriched_at=>{:type=>"date", :doc_values=>true},
       :scored_at=>{:type=>"date", :doc_values=>true}}},
   :description=>{:type=>"string", :analyzer=>"english"},
   :ignore_project_ids=>{:type=>"integer", :doc_values=>true},
   :in_blacklist=>{:type=>"boolean", :doc_values=>true},
   :in_bluelist=>{:type=>"boolean", :doc_values=>true},
   :ad_networks=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :host_names=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :domain_names=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :directory_ids=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :geographics=>
    {:type=>"nested",
     :properties=>
      {:location=>{:type=>"nested", :enabled=>false},
       :language=>
        {:type=>"string", :index=>:not_analyzed, :doc_values=>true}}},
   :tags=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :keywords=>{:type=>"string", :index=>:not_analyzed, :doc_values=>true},
   :share_counts=>{:type=>"nested"},
   :data=>{:type=>"nested", :dynamic=>true},
   :inaccurate_data=>{:type=>"boolean", :doc_values=>true}},
 @options={:dynamic=>"strict"},
 @type="influencer">
 

Logs.txt

[2016-05-29 20:17:51,446][WARN ][cluster.routing.allocation.decider] [audienti-dev-1] high disk watermark [90%] exceeded on [KsO91bLuS1yvz4V5k-yIdw][audienti-dev-1] free: 29.4gb[6.5%], shards will be relocated away from this node
java.lang.OutOfMemoryError: Java heap space
Dumping heap to java_pid1.hprof ...
Heap dump file created [1512674531 bytes in 14.224 secs]
[2016-05-29 20:18:45,633][WARN ][cluster.service          ] [audienti-dev-1] cluster state update task [cluster_reroute (api)] took 33.2s above the warn threshold of 30s
[2016-05-29 20:18:54,045][WARN ][cluster.routing.allocation.decider] [audienti-dev-1] high disk watermark [90%] exceeded on [KsO91bLuS1yvz4V5k-yIdw][audienti-dev-1] free: 29.4gb[6.5%], shards will be relocated away from this node
[2016-05-29 20:19:22,463][WARN ][cluster.routing.allocation.decider] [audienti-dev-1] high disk watermark [90%] exceeded on [KsO91bLuS1yvz4V5k-yIdw][audienti-dev-1] free: 29.4gb[6.5%], shards will be relocated away from this node
[2016-05-29 20:19:22,463][INFO ][cluster.routing.allocation.decider] [audienti-dev-1] high disk watermark exceeded on one or more nodes, rerouting shards
[2016-05-29 20:19:32,483][WARN ][index.merge.scheduler    ] [audienti-dev-1] [influencers_development][0] failed to merge
org.apache.lucene.store.AlreadyClosedException: refusing to delete any files: this IndexWriter hit an unrecoverable exception
at org.apache.lucene.index.IndexFileDeleter.ensureOpen(IndexFileDeleter.java:354)
at org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:719)
at org.apache.lucene.index.IndexFileDeleter.refresh(IndexFileDeleter.java:451)
at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3826)
at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:409)
at org.apache.lucene.index.TrackingConcurrentMergeScheduler.doMerge(TrackingConcurrentMergeScheduler.java:107)
at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:486)
Caused by: java.lang.OutOfMemoryError: Java heap space