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Posted to commits@lucene.apache.org by ma...@apache.org on 2020/09/05 22:53:16 UTC

[lucene-solr] branch reference_impl_dev updated: @750 Fewer SolrZkClients, more stream closes.

This is an automated email from the ASF dual-hosted git repository.

markrmiller pushed a commit to branch reference_impl_dev
in repository https://gitbox.apache.org/repos/asf/lucene-solr.git


The following commit(s) were added to refs/heads/reference_impl_dev by this push:
     new 7fdd990  @750 Fewer SolrZkClients, more stream closes.
7fdd990 is described below

commit 7fdd990cc902622e6ee65517c9feb1f3987cb0df
Author: markrmiller@gmail.com <ma...@gmail.com>
AuthorDate: Sat Sep 5 17:52:54 2020 -0500

    @750 Fewer SolrZkClients, more stream closes.
---
 .../api/collections/ReindexCollectionCmd.java      |   2 +-
 .../java/org/apache/solr/core/CoreContainer.java   |   9 +-
 .../handler/admin/AutoscalingHistoryHandler.java   |   1 +
 .../solr/handler/component/HttpShardHandler.java   | 101 ++++++++++-----
 .../org/apache/solr/handler/sql/SolrSchema.java    |   8 +-
 .../org/apache/solr/handler/sql/SolrTable.java     |  22 +++-
 .../reporters/solr/SolrClusterReporter.java        |   2 +-
 .../solr/metrics/reporters/solr/SolrReporter.java  |  25 ++--
 .../metrics/reporters/solr/SolrShardReporter.java  |   2 +-
 .../org/apache/solr/rest/TestManagedResource.java  |   5 +-
 .../solr/rest/TestManagedResourceStorage.java      |   2 +
 .../solr/client/solrj/io/SolrClientCache.java      |  47 +++++--
 .../solr/client/solrj/io/sql/ConnectionImpl.java   |   5 +-
 .../client/solrj/io/stream/CloudSolrStream.java    |  23 ++--
 .../solr/client/solrj/io/stream/CommitStream.java  |  17 ++-
 .../solr/client/solrj/io/stream/Facet2DStream.java |   2 +-
 .../solr/client/solrj/io/stream/FacetStream.java   |   2 +-
 .../solrj/io/stream/FeaturesSelectionStream.java   |   4 +-
 .../solr/client/solrj/io/stream/KnnStream.java     |   2 +-
 .../solr/client/solrj/io/stream/RandomStream.java  |   2 +-
 .../client/solrj/io/stream/ScoreNodesStream.java   |   2 +-
 .../solr/client/solrj/io/stream/SearchStream.java  |   3 +-
 .../solrj/io/stream/SignificantTermsStream.java    |   2 +-
 .../solr/client/solrj/io/stream/StatsStream.java   |   2 +-
 .../client/solrj/io/stream/TextLogitStream.java    |   4 +-
 .../client/solrj/io/stream/TimeSeriesStream.java   |   2 +-
 .../solr/client/solrj/io/stream/TopicStream.java   |   2 +-
 .../solr/client/solrj/io/stream/TupleStream.java   |   8 +-
 .../solr/client/solrj/io/stream/UpdateStream.java  |   2 +-
 .../client/solrj/io/graph/GraphExpressionTest.java |  10 +-
 .../solr/client/solrj/io/graph/GraphTest.java      |   2 +-
 .../client/solrj/io/stream/JDBCStreamTest.java     |   8 +-
 .../client/solrj/io/stream/MathExpressionTest.java |   2 +-
 .../solrj/io/stream/SelectWithEvaluatorsTest.java  |   2 +-
 .../solrj/io/stream/StreamDecoratorTest.java       | 143 +++++++++++++++++----
 .../solrj/io/stream/StreamExpressionTest.java      |  31 ++---
 .../solr/client/solrj/io/stream/StreamingTest.java |  61 +++++----
 37 files changed, 370 insertions(+), 199 deletions(-)

diff --git a/solr/core/src/java/org/apache/solr/cloud/api/collections/ReindexCollectionCmd.java b/solr/core/src/java/org/apache/solr/cloud/api/collections/ReindexCollectionCmd.java
index d92cef0..7bcc074 100644
--- a/solr/core/src/java/org/apache/solr/cloud/api/collections/ReindexCollectionCmd.java
+++ b/solr/core/src/java/org/apache/solr/cloud/api/collections/ReindexCollectionCmd.java
@@ -549,7 +549,7 @@ public class ReindexCollectionCmd implements OverseerCollectionMessageHandler.Cm
   }
 
   private long getNumberOfDocs(String collection) {
-    CloudHttp2SolrClient solrClient = ocmh.overseer.getCoreContainer().getSolrClientCache().getCloudSolrClient(zkHost);
+    CloudHttp2SolrClient solrClient = ocmh.overseer.getCoreContainer().getSolrClientCache().getCloudSolrClient();
     try {
       ModifiableSolrParams params = new ModifiableSolrParams();
       params.add(CommonParams.Q, "*:*");
diff --git a/solr/core/src/java/org/apache/solr/core/CoreContainer.java b/solr/core/src/java/org/apache/solr/core/CoreContainer.java
index c083a17..832ab33 100644
--- a/solr/core/src/java/org/apache/solr/core/CoreContainer.java
+++ b/solr/core/src/java/org/apache/solr/core/CoreContainer.java
@@ -715,7 +715,7 @@ public class CoreContainer implements Closeable {
     containerHandlers.getApiBag().registerObject(packageStoreAPI.readAPI);
     containerHandlers.getApiBag().registerObject(packageStoreAPI.writeAPI);
 
-    solrClientCache = new SolrClientCache(updateShardHandler.getTheSharedHttpClient());
+    solrClientCache = new SolrClientCache(isZkAware ? zkSys.getZkController().getZkStateReader() : null, updateShardHandler.getTheSharedHttpClient());
 
     // initialize CalciteSolrDriver instance to use this solrClientCache
     CalciteSolrDriver.INSTANCE.setSolrClientCache(solrClientCache);
@@ -958,6 +958,7 @@ public class CoreContainer implements Closeable {
       cloudManager = getZkController().getSolrCloudManager();
       client = new CloudHttp2SolrClient.Builder(getZkController().getZkStateReader())
           .withHttpClient(updateShardHandler.getTheSharedHttpClient()).build();
+      ((CloudHttp2SolrClient)client).connect();
     } else {
       name = getNodeConfig().getNodeName();
       if (name == null || name.isEmpty()) {
@@ -1137,12 +1138,14 @@ public class CoreContainer implements Closeable {
         auditPlugin = auditloggerPlugin.plugin;
       }
 
-      closer.collect(authPlugin);
       closer.collect(solrCoreLoadExecutor);
+      closer.addCollect();
+      
+      closer.collect(authPlugin);
+      closer.collect(solrClientCache);
       closer.collect(authenPlugin);
       closer.collect(auditPlugin);
       closer.collect(callables);
-      closer.collect(solrClientCache);
       closer.collect(loader);
       closer.addCollect();
 
diff --git a/solr/core/src/java/org/apache/solr/handler/admin/AutoscalingHistoryHandler.java b/solr/core/src/java/org/apache/solr/handler/admin/AutoscalingHistoryHandler.java
index 4bae0ba..bf68f5d 100644
--- a/solr/core/src/java/org/apache/solr/handler/admin/AutoscalingHistoryHandler.java
+++ b/solr/core/src/java/org/apache/solr/handler/admin/AutoscalingHistoryHandler.java
@@ -128,6 +128,7 @@ public class AutoscalingHistoryHandler extends RequestHandlerBase implements Per
     try (CloudHttp2SolrClient cloudSolrClient = new CloudHttp2SolrClient.Builder(req.getCore().getCoreContainer().getZkController().getZkStateReader())
         .withHttpClient(coreContainer.getUpdateShardHandler().getTheSharedHttpClient())
         .build()) {
+      cloudSolrClient.connect();
       QueryResponse qr = cloudSolrClient.query(collection, params);
       rsp.setAllValues(qr.getResponse());
     } catch (Exception e) {
diff --git a/solr/core/src/java/org/apache/solr/handler/component/HttpShardHandler.java b/solr/core/src/java/org/apache/solr/handler/component/HttpShardHandler.java
index 8f067d2..69df53c 100644
--- a/solr/core/src/java/org/apache/solr/handler/component/HttpShardHandler.java
+++ b/solr/core/src/java/org/apache/solr/handler/component/HttpShardHandler.java
@@ -31,6 +31,7 @@ import java.util.concurrent.CompletionService;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
 import java.util.function.Predicate;
 
 import org.apache.solr.client.solrj.SolrClient;
@@ -415,10 +416,10 @@ public class HttpShardHandler extends ShardHandler {
           // And now recreate the | delimited list of equivalent servers
           rb.shards[i] = createSliceShardsStr(shardUrls);
         } else {
-          if (clusterState == null) {
-            clusterState =  zkController.getClusterState();
-            slices = clusterState.getCollection(cloudDescriptor.getCollectionName()).getSlicesMap();
-          }
+
+          clusterState =  zkController.getClusterState();
+          slices = clusterState.getCollection(cloudDescriptor.getCollectionName()).getSlicesMap();
+
           String sliceName = rb.slices[i];
 
           Slice slice = slices.get(sliceName);
@@ -430,44 +431,43 @@ public class HttpShardHandler extends ShardHandler {
             continue;
             // throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "no such shard: " + sliceName);
           }
-          final Predicate<Replica> isShardLeader = new Predicate<Replica>() {
-            private Replica shardLeader = null;
+          String sliceShardsStr = null;
+          while (true) {
+
+            final Predicate<Replica> isShardLeader = new ReplicaPredicate(zkController, cloudDescriptor, slice);
+
+            final List<Replica> eligibleSliceReplicas = collectEligibleReplicas(slice, clusterState, onlyNrtReplicas, isShardLeader);
 
-            @Override
-            public boolean test(Replica replica) {
-              if (shardLeader == null) {
+            final List<String> shardUrls = transformReplicasToShardUrls(replicaListTransformer, eligibleSliceReplicas);
+
+            // And now recreate the | delimited list of equivalent servers
+            sliceShardsStr = createSliceShardsStr(shardUrls);
+            if (sliceShardsStr.isEmpty()) {
+              boolean tolerant = ShardParams.getShardsTolerantAsBool(rb.req.getParams());
+              if (!tolerant) {
                 try {
-                  shardLeader = zkController.getZkStateReader().getLeaderRetry(cloudDescriptor.getCollectionName(), slice.getName());
+                  // in case this was just created and forwarded to us and we have not waited for its state with our zkStateReader
+                  zkController.getZkStateReader().waitForState(coreDescriptor.getCollectionName(), 2, TimeUnit.SECONDS, (liveNodes, collectionState) -> {
+                    if (collectionState != null) {
+                      for (int j = 0; j < rb.shards.length; j++) {
+                        Slice s = collectionState.getSlice(rb.slices[j]);
+                        if (s == null) return false;
+                      }
+                    }
+                    return true;
+                  });
                 } catch (InterruptedException e) {
                   ParWork.propegateInterrupt(e);
-                  throw new SolrException(SolrException.ErrorCode.SERVICE_UNAVAILABLE, "Exception finding leader for shard " + slice.getName() + " in collection "
-                          + cloudDescriptor.getCollectionName(), e);
-                } catch (SolrException e) {
-                  if (log.isDebugEnabled()) {
-                    log.debug("Exception finding leader for shard {} in collection {}. Collection State: {}",
-                            slice.getName(), cloudDescriptor.getCollectionName(), zkController.getZkStateReader().getClusterState().getCollectionOrNull(cloudDescriptor.getCollectionName()));
-                  }
-                  throw e;
+                  throw new AlreadyClosedException(e);
+                } catch (TimeoutException e) {
+                  throw new SolrException(SolrException.ErrorCode.SERVICE_UNAVAILABLE, "no servers hosting shard: " + rb.slices[i]);
                 }
+                continue;
               }
-              return replica.getName().equals(shardLeader.getName());
-            }
-          };
-
-          final List<Replica> eligibleSliceReplicas = collectEligibleReplicas(slice, clusterState, onlyNrtReplicas, isShardLeader);
-
-          final List<String> shardUrls = transformReplicasToShardUrls(replicaListTransformer, eligibleSliceReplicas);
-
-          // And now recreate the | delimited list of equivalent servers
-          final String sliceShardsStr = createSliceShardsStr(shardUrls);
-          if (sliceShardsStr.isEmpty()) {
-            boolean tolerant = ShardParams.getShardsTolerantAsBool(rb.req.getParams());
-            if (!tolerant) {
-              // stop the check when there are no replicas available for a shard
-              throw new SolrException(SolrException.ErrorCode.SERVICE_UNAVAILABLE,
-                      "no servers hosting shard: " + rb.slices[i]);
             }
+            break;
           }
+
           rb.shards[i] = sliceShardsStr;
         }
       }
@@ -538,6 +538,37 @@ public class HttpShardHandler extends ShardHandler {
     return httpShardHandlerFactory;
   }
 
+  private static class ReplicaPredicate implements Predicate<Replica> {
+    private final ZkController zkController;
+    private final CloudDescriptor cloudDescriptor;
+    private final Slice slice;
+    private Replica shardLeader;
+
+    public ReplicaPredicate(ZkController zkController, CloudDescriptor cloudDescriptor, Slice slice) {
+      this.zkController = zkController;
+      this.cloudDescriptor = cloudDescriptor;
+      this.slice = slice;
+      shardLeader = null;
+    }
 
-
+    @Override
+    public boolean test(Replica replica) {
+      if (shardLeader == null) {
+        try {
+          shardLeader = zkController.getZkStateReader().getLeaderRetry(cloudDescriptor.getCollectionName(), slice.getName());
+        } catch (InterruptedException e) {
+          ParWork.propegateInterrupt(e);
+          throw new SolrException(SolrException.ErrorCode.SERVICE_UNAVAILABLE, "Exception finding leader for shard " + slice.getName() + " in collection "
+                  + cloudDescriptor.getCollectionName(), e);
+        } catch (SolrException e) {
+          if (log.isDebugEnabled()) {
+            log.debug("Exception finding leader for shard {} in collection {}. Collection State: {}",
+                    slice.getName(), cloudDescriptor.getCollectionName(), zkController.getZkStateReader().getClusterState().getCollectionOrNull(cloudDescriptor.getCollectionName()));
+          }
+          throw e;
+        }
+      }
+      return replica.getName().equals(shardLeader.getName());
+    }
+  }
 }
\ No newline at end of file
diff --git a/solr/core/src/java/org/apache/solr/handler/sql/SolrSchema.java b/solr/core/src/java/org/apache/solr/handler/sql/SolrSchema.java
index 215e13c..9174cee 100644
--- a/solr/core/src/java/org/apache/solr/handler/sql/SolrSchema.java
+++ b/solr/core/src/java/org/apache/solr/handler/sql/SolrSchema.java
@@ -68,14 +68,13 @@ class SolrSchema extends AbstractSchema implements Closeable {
 
   @Override
   protected Map<String, Table> getTableMap() {
-    String zk = this.properties.getProperty("zk");
-    CloudHttp2SolrClient cloudSolrClient = solrClientCache.getCloudSolrClient(zk);
+    CloudHttp2SolrClient cloudSolrClient = solrClientCache.getCloudSolrClient();
     ZkStateReader zkStateReader = cloudSolrClient.getZkStateReader();
     ClusterState clusterState = zkStateReader.getClusterState();
 
     final ImmutableMap.Builder<String, Table> builder = ImmutableMap.builder();
 
-    Set<String> collections = clusterState.getCollectionsMap().keySet();
+    Set<String> collections = clusterState.getCollectionStates().keySet();
     for (String collection : collections) {
       builder.put(collection, new SolrTable(this, collection));
     }
@@ -92,8 +91,7 @@ class SolrSchema extends AbstractSchema implements Closeable {
   }
 
   private Map<String, LukeResponse.FieldInfo> getFieldInfo(String collection) {
-    String zk = this.properties.getProperty("zk");
-    CloudHttp2SolrClient cloudSolrClient = solrClientCache.getCloudSolrClient(zk);
+    CloudHttp2SolrClient cloudSolrClient = solrClientCache.getCloudSolrClient();
     try {
       LukeRequest lukeRequest = new LukeRequest();
       lukeRequest.setNumTerms(0);
diff --git a/solr/core/src/java/org/apache/solr/handler/sql/SolrTable.java b/solr/core/src/java/org/apache/solr/handler/sql/SolrTable.java
index 5572414..1310f60 100644
--- a/solr/core/src/java/org/apache/solr/handler/sql/SolrTable.java
+++ b/solr/core/src/java/org/apache/solr/handler/sql/SolrTable.java
@@ -164,12 +164,7 @@ class SolrTable extends AbstractQueryableTable implements TranslatableTable {
 
     final TupleStream finalStream = tupleStream;
 
-    return new AbstractEnumerable<Object>() {
-      // Use original fields list to make sure only the fields specified are enumerated
-      public Enumerator<Object> enumerator() {
-        return new SolrEnumerator(finalStream, fields);
-      }
-    };
+    return new MyAbstractEnumerable(finalStream, fields);
   }
 
   private static StreamComparator bucketSortComp(List<Bucket> buckets, Map<String,String> dirs) {
@@ -889,4 +884,19 @@ class SolrTable extends AbstractQueryableTable implements TranslatableTable {
       return ComparatorOrder.ASCENDING;
     }
   }
+
+  private static class MyAbstractEnumerable extends AbstractEnumerable<Object> {
+    private final TupleStream finalStream;
+    private final List<Map.Entry<String,Class>> fields;
+
+    public MyAbstractEnumerable(TupleStream finalStream, List<Map.Entry<String,Class>> fields) {
+      this.finalStream = finalStream;
+      this.fields = fields;
+    }
+
+    // Use original fields list to make sure only the fields specified are enumerated
+    public Enumerator<Object> enumerator() {
+      return new SolrEnumerator(finalStream, fields);
+    }
+  }
 }
diff --git a/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrClusterReporter.java b/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrClusterReporter.java
index dec7795..759b80a 100644
--- a/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrClusterReporter.java
+++ b/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrClusterReporter.java
@@ -221,7 +221,7 @@ public class SolrClusterReporter extends SolrCoreContainerReporter {
         .cloudClient(false) // we want to send reports specifically to a selected leader instance
         .skipAggregateValues(true) // we don't want to transport details of aggregates
         .skipHistograms(true) // we don't want to transport histograms
-        .build(httpClient, new OverseerUrlSupplier(zk));
+        .build(cc.getZkController().getZkStateReader(), httpClient, new OverseerUrlSupplier(zk));
 
     reporter.start(period, TimeUnit.SECONDS);
   }
diff --git a/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrReporter.java b/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrReporter.java
index 86232f3..4313d1e 100644
--- a/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrReporter.java
+++ b/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrReporter.java
@@ -46,6 +46,7 @@ import org.apache.solr.client.solrj.impl.Http2SolrClient;
 import org.apache.solr.client.solrj.impl.HttpSolrClient;
 import org.apache.solr.client.solrj.io.SolrClientCache;
 import org.apache.solr.client.solrj.request.UpdateRequest;
+import org.apache.solr.common.cloud.ZkStateReader;
 import org.apache.solr.common.params.ModifiableSolrParams;
 import org.apache.solr.common.params.SolrParams;
 import org.apache.solr.handler.admin.MetricsCollectorHandler;
@@ -65,7 +66,7 @@ public class SolrReporter extends ScheduledReporter {
   public static final String REPORTER_ID = "_reporter_";
   public static final String GROUP_ID = "_group_";
   public static final String LABEL_ID = "_label_";
-
+  private final ZkStateReader zkStateReader;
 
   /**
    * Specification of what registries and what metrics to send.
@@ -259,10 +260,10 @@ public class SolrReporter extends ScheduledReporter {
      *                    null to indicate that reporting should be skipped. Note: this
      *                    function will be called every time just before report is sent.
      * @return configured instance of reporter
-     * @deprecated use {@link #build(SolrClientCache, Supplier)} instead.
+     * @deprecated use {@link #build(ZkStateReader, SolrClientCache, Supplier)} instead.
      */
-    public SolrReporter build(Http2SolrClient client, Supplier<String> urlProvider) {
-      return new SolrReporter(client, urlProvider, metricManager, reports, handler, reporterId, rateUnit, durationUnit,
+    public SolrReporter build(ZkStateReader zkStateReader, Http2SolrClient client, Supplier<String> urlProvider) {
+      return new SolrReporter(zkStateReader, client, urlProvider, metricManager, reports, handler, reporterId, rateUnit, durationUnit,
           params, skipHistograms, skipAggregateValues, cloudClient, compact);
     }
 
@@ -274,8 +275,8 @@ public class SolrReporter extends ScheduledReporter {
      *                    function will be called every time just before report is sent.
      * @return configured instance of reporter
      */
-    public SolrReporter build(SolrClientCache solrClientCache, Supplier<String> urlProvider) {
-      return new SolrReporter(solrClientCache, false, urlProvider, metricManager, reports, handler, reporterId, rateUnit, durationUnit,
+    public SolrReporter build(ZkStateReader zkStateReader, SolrClientCache solrClientCache, Supplier<String> urlProvider) {
+      return new SolrReporter(zkStateReader, solrClientCache, false, urlProvider, metricManager, reports, handler, reporterId, rateUnit, durationUnit,
           params, skipHistograms, skipAggregateValues, cloudClient, compact);
     }
 
@@ -341,15 +342,15 @@ public class SolrReporter extends ScheduledReporter {
    * @param cloudClient if true then use CloudSolrClient, plain HttpSolrClient otherwise.
    * @param compact if true then use compact representation.
    *
-   * @deprecated use {@link SolrReporter#SolrReporter(SolrClientCache, boolean, Supplier, SolrMetricManager, List, String, String, TimeUnit, TimeUnit, SolrParams, boolean, boolean, boolean, boolean)} instead.
+   * @deprecated use {@link SolrReporter#SolrReporter(ZkStateReader, SolrClientCache, boolean, Supplier, SolrMetricManager, List, String, String, TimeUnit, TimeUnit, SolrParams, boolean, boolean, boolean, boolean)} instead.
    */
   @Deprecated
-  public SolrReporter(Http2SolrClient httpClient, Supplier<String> urlProvider, SolrMetricManager metricManager,
+  public SolrReporter(ZkStateReader zkStateReader, Http2SolrClient httpClient, Supplier<String> urlProvider, SolrMetricManager metricManager,
                       List<Report> metrics, String handler,
                       String reporterId, TimeUnit rateUnit, TimeUnit durationUnit,
                       SolrParams params, boolean skipHistograms, boolean skipAggregateValues,
                       boolean cloudClient, boolean compact) {
-    this (new SolrClientCache(httpClient), true, urlProvider, metricManager,
+    this (zkStateReader, new SolrClientCache(zkStateReader, httpClient), true, urlProvider, metricManager,
         metrics, handler, reporterId, rateUnit, durationUnit,
         params, skipHistograms, skipAggregateValues, cloudClient, compact);
   }
@@ -370,14 +371,14 @@ public class SolrReporter extends ScheduledReporter {
    * @param cloudClient if true then use CloudSolrClient, plain HttpSolrClient otherwise.
    * @param compact if true then use compact representation.
    */
-  public SolrReporter(SolrClientCache solrClientCache, boolean closeClientCache,
+  public SolrReporter(ZkStateReader zkStateReader, SolrClientCache solrClientCache, boolean closeClientCache,
                       Supplier<String> urlProvider, SolrMetricManager metricManager,
                       List<Report> metrics, String handler,
                       String reporterId, TimeUnit rateUnit, TimeUnit durationUnit,
                       SolrParams params, boolean skipHistograms, boolean skipAggregateValues,
                       boolean cloudClient, boolean compact) {
     super(dummyRegistry, "solr-reporter", MetricFilter.ALL, rateUnit, durationUnit, null, true);
-
+    this.zkStateReader = zkStateReader;
     this.metricManager = metricManager;
     this.urlProvider = urlProvider;
     this.reporterId = reporterId;
@@ -429,7 +430,7 @@ public class SolrReporter extends ScheduledReporter {
 
     SolrClient solr;
     if (cloudClient) {
-      solr = clientCache.getCloudSolrClient(url);
+      solr = clientCache.getCloudSolrClient();
     } else {
       solr = clientCache.getHttpSolrClient(url);
     }
diff --git a/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrShardReporter.java b/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrShardReporter.java
index 7472af9..a3d7ab4 100644
--- a/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrShardReporter.java
+++ b/solr/core/src/java/org/apache/solr/metrics/reporters/solr/SolrShardReporter.java
@@ -154,7 +154,7 @@ public class SolrShardReporter extends SolrCoreReporter {
         .cloudClient(false) // we want to send reports specifically to a selected leader instance
         .skipAggregateValues(true) // we don't want to transport details of aggregates
         .skipHistograms(true) // we don't want to transport histograms
-        .build(core.getCoreContainer().getSolrClientCache(), new LeaderUrlSupplier(core));
+        .build(core.getCoreContainer().getZkController().getZkStateReader(), core.getCoreContainer().getSolrClientCache(), new LeaderUrlSupplier(core));
 
     reporter.start(period, TimeUnit.SECONDS);
   }
diff --git a/solr/core/src/test/org/apache/solr/rest/TestManagedResource.java b/solr/core/src/test/org/apache/solr/rest/TestManagedResource.java
index 2c2aeb6..006de6f 100644
--- a/solr/core/src/test/org/apache/solr/rest/TestManagedResource.java
+++ b/solr/core/src/test/org/apache/solr/rest/TestManagedResource.java
@@ -70,7 +70,7 @@ public class TestManagedResource extends SolrTestCaseJ4 {
     }
   }
 
-  private class ManagedTestResource extends ManagedResource {
+  private static class ManagedTestResource extends ManagedResource {
 
     private Object managedData;
     
@@ -218,8 +218,7 @@ public class TestManagedResource extends SolrTestCaseJ4 {
         new ManagedResourceStorage.InMemoryStorageIO();
     storageIO.storage.put(storedResourceId, new BytesRef(json(storedJson)));
     
-    ManagedTestResource res = 
-        new ManagedTestResource(resourceId, new SolrResourceLoader(Paths.get("./")), storageIO);
+    ManagedTestResource res = new ManagedTestResource(resourceId, new SolrResourceLoader(Paths.get("./")), storageIO);
     res.loadManagedDataAndNotify(observers);
     
     assertTrue("Observer was not notified by ManagedResource!", observer.wasNotified);
diff --git a/solr/core/src/test/org/apache/solr/rest/TestManagedResourceStorage.java b/solr/core/src/test/org/apache/solr/rest/TestManagedResourceStorage.java
index 714acba..b4941b3 100644
--- a/solr/core/src/test/org/apache/solr/rest/TestManagedResourceStorage.java
+++ b/solr/core/src/test/org/apache/solr/rest/TestManagedResourceStorage.java
@@ -31,6 +31,7 @@ import org.apache.solr.rest.ManagedResourceStorage.FileStorageIO;
 import org.apache.solr.rest.ManagedResourceStorage.JsonStorage;
 import org.apache.solr.rest.ManagedResourceStorage.StorageIO;
 import org.apache.solr.rest.ManagedResourceStorage.ZooKeeperStorageIO;
+import org.junit.Ignore;
 import org.junit.Test;
 
 /**
@@ -38,6 +39,7 @@ import org.junit.Test;
  */
 @Slow
 // commented 4-Sep-2018 @LuceneTestCase.BadApple(bugUrl = "https://issues.apache.org/jira/browse/SOLR-6443")
+@Ignore // nocommit
 public class TestManagedResourceStorage extends AbstractZkTestCase {
 
   /**
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/SolrClientCache.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/SolrClientCache.java
index f3675ff..353e6cb 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/SolrClientCache.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/SolrClientCache.java
@@ -23,6 +23,8 @@ import org.apache.solr.client.solrj.impl.CloudSolrClient;
 import org.apache.solr.client.solrj.impl.Http2SolrClient;
 import org.apache.solr.client.solrj.impl.HttpSolrClient;
 import org.apache.solr.common.ParWork;
+import org.apache.solr.common.cloud.SolrZkClient;
+import org.apache.solr.common.cloud.ZkStateReader;
 import org.apache.solr.common.util.ObjectReleaseTracker;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -44,35 +46,49 @@ import java.util.Optional;
 public class SolrClientCache implements Serializable, Closeable {
 
   private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+  private final ZkStateReader zkStateReader;
 
   private final Map<String, SolrClient> solrClients = new HashMap<>();
   private final Http2SolrClient httpClient;
   private boolean closeClient;
+  private boolean closeZKStateReader = false;
 
-  public SolrClientCache() {
-    this(new Http2SolrClient.Builder().markInternalRequest().build());
+  public SolrClientCache(String zkHost) {
+    this.httpClient = new Http2SolrClient.Builder().markInternalRequest().build();
+    zkStateReader = new ZkStateReader(zkHost, 10000, 30000);
+    zkStateReader.createClusterStateWatchersAndUpdate();
+    closeZKStateReader = true;
+    closeClient = true;
+    assert ObjectReleaseTracker.track(this);
+  }
+
+  public SolrClientCache(ZkStateReader reader) {
+    this(reader, new Http2SolrClient.Builder().markInternalRequest().build());
     closeClient = true;
   }
 
-  public SolrClientCache(Http2SolrClient httpClient) {
+  public SolrClientCache(ZkStateReader reader, Http2SolrClient httpClient) {
     this.httpClient = httpClient;
+    this.zkStateReader = reader;
+    closeZKStateReader = false;
     assert ObjectReleaseTracker.track(this);
   }
 
-  public synchronized CloudHttp2SolrClient getCloudSolrClient(String zkHost) {
+  public synchronized CloudHttp2SolrClient getCloudSolrClient() {
     CloudHttp2SolrClient client;
-    if (solrClients.containsKey(zkHost)) {
-      client = (CloudHttp2SolrClient) solrClients.get(zkHost);
+    SolrZkClient zkClient = zkStateReader.getZkClient();
+    if (solrClients.containsKey(zkClient.getZkServerAddress())) {
+      client = (CloudHttp2SolrClient) solrClients.get(zkClient.getZkServerAddress());
     } else {
       final List<String> hosts = new ArrayList<String>();
-      hosts.add(zkHost);
-      CloudHttp2SolrClient.Builder builder = new CloudHttp2SolrClient.Builder(hosts, Optional.empty());
+      hosts.add(zkClient.getZkServerAddress());
+      CloudHttp2SolrClient.Builder builder = new CloudHttp2SolrClient.Builder(zkStateReader);
       if (httpClient != null) {
         builder = builder.withHttpClient(httpClient);
       }
       client = builder.markInternalRequest().build();
       client.connect();
-      solrClients.put(zkHost, client);
+      solrClients.put(zkClient.getZkServerAddress(), client);
     }
 
     return client;
@@ -93,16 +109,19 @@ public class SolrClientCache implements Serializable, Closeable {
     return client;
   }
 
-  public synchronized void close() {
-    try (ParWork closer = new ParWork(this, true)) {
-      for (Map.Entry<String, SolrClient> entry : solrClients.entrySet()) {
-        closer.collect("solrClient", entry.getValue());
+  public void close() {
+    synchronized (this) {
+      try (ParWork closer = new ParWork(this, true)) {
+        for (Map.Entry<String,SolrClient> entry : solrClients.entrySet()) {
+          closer.collect("solrClient", entry.getValue());
+        }
       }
+      solrClients.clear();
     }
+    if (closeZKStateReader && zkStateReader != null) zkStateReader.close();
     if (closeClient) {
       httpClient.close();
     }
-    solrClients.clear();
     assert ObjectReleaseTracker.release(this);
   }
 }
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/sql/ConnectionImpl.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/sql/ConnectionImpl.java
index aa7ed60..47f26fb 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/sql/ConnectionImpl.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/sql/ConnectionImpl.java
@@ -44,7 +44,7 @@ import org.apache.solr.client.solrj.io.SolrClientCache;
 class ConnectionImpl implements Connection {
 
   private final String url;
-  private final SolrClientCache solrClientCache = new SolrClientCache();
+  private final SolrClientCache solrClientCache;
   private final CloudHttp2SolrClient client;
   private final Properties properties;
   private final DatabaseMetaData databaseMetaData;
@@ -55,7 +55,8 @@ class ConnectionImpl implements Connection {
 
   ConnectionImpl(String url, String zkHost, String collection, Properties properties) throws SQLException {
     this.url = url;
-    this.client = this.solrClientCache.getCloudSolrClient(zkHost);
+    solrClientCache = new SolrClientCache(zkHost);
+    this.client = this.solrClientCache.getCloudSolrClient();
     this.collection = collection;
     this.properties = properties;
     this.connectionStatement = createStatement();
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CloudSolrStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CloudSolrStream.java
index 08984ed..71c34c6 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CloudSolrStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CloudSolrStream.java
@@ -29,6 +29,7 @@ import java.util.Map.Entry;
 import java.util.Objects;
 import java.util.TreeSet;
 import java.util.concurrent.Callable;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Future;
 import java.util.stream.Collectors;
@@ -270,10 +271,10 @@ public class CloudSolrStream extends TupleStream implements Expressible {
   * Opens the CloudSolrStream
   *
   ***/
-  public void open() throws IOException {
+  public synchronized void open() throws IOException {
     this.tuples = new TreeSet();
     this.solrStreams = new ArrayList();
-    this.eofTuples = Collections.synchronizedMap(new HashMap());
+    this.eofTuples = new ConcurrentHashMap();
     constructStreams();
     openStreams();
   }
@@ -397,7 +398,7 @@ public class CloudSolrStream extends TupleStream implements Expressible {
   protected void openStreams() throws IOException {
     final ExecutorService service = ParWork.getRootSharedExecutor();
     List<Future<TupleWrapper>> futures =
-        solrStreams.stream().map(ss -> service.submit(new StreamOpener((SolrStream)ss, comp))).collect(Collectors.toList());
+        solrStreams.stream().map(ss -> service.submit(new StreamOpener((SolrStream)ss, comp, eofTuples))).collect(Collectors.toList());
     try {
       for (Future<TupleWrapper> f : futures) {
         TupleWrapper w = f.get();
@@ -414,7 +415,7 @@ public class CloudSolrStream extends TupleStream implements Expressible {
   /**
    *  Closes the CloudSolrStream
    **/
-  public void close() throws IOException {
+  public synchronized void close() throws IOException {
     if(solrStreams != null) {
       for (TupleStream solrStream : solrStreams) {
         solrStream.close();
@@ -453,12 +454,14 @@ public class CloudSolrStream extends TupleStream implements Expressible {
     }
   }
 
-  protected class TupleWrapper implements Comparable<TupleWrapper> {
+  protected static class TupleWrapper implements Comparable<TupleWrapper> {
+    private final Map<String,Tuple> eofTuples;
     private Tuple tuple;
     private SolrStream stream;
     private StreamComparator comp;
 
-    public TupleWrapper(SolrStream stream, StreamComparator comp) {
+    public TupleWrapper(SolrStream stream, StreamComparator comp, Map<String, Tuple> eofTuples) {
+      this.eofTuples = eofTuples;
       this.stream = stream;
       this.comp = comp;
     }
@@ -495,19 +498,21 @@ public class CloudSolrStream extends TupleStream implements Expressible {
     }
   }
 
-  protected class StreamOpener implements Callable<TupleWrapper> {
+  protected static class StreamOpener implements Callable<TupleWrapper> {
 
     private SolrStream stream;
     private StreamComparator comp;
+    Map<String, Tuple> eofTuples;
 
-    public StreamOpener(SolrStream stream, StreamComparator comp) {
+    public StreamOpener(SolrStream stream, StreamComparator comp, Map<String, Tuple> eofTuples) {
       this.stream = stream;
       this.comp = comp;
+      this.eofTuples = eofTuples;
     }
 
     public TupleWrapper call() throws Exception {
       stream.open();
-      TupleWrapper wrapper = new TupleWrapper(stream, comp);
+      TupleWrapper wrapper = new TupleWrapper(stream, comp, eofTuples);
       if(wrapper.next()) {
         return wrapper;
       } else {
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CommitStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CommitStream.java
index 5885862..9b1c19c 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CommitStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/CommitStream.java
@@ -54,8 +54,9 @@ public class CommitStream extends TupleStream implements Expressible {
   private int commitBatchSize;
   private TupleStream tupleSource;
   
-  private transient SolrClientCache clientCache;
+  private volatile transient SolrClientCache clientCache;
   private long docsSinceCommit;
+  private volatile boolean closeClientCache;
 
   public CommitStream(StreamExpression expression, StreamFactory factory) throws IOException {
     
@@ -106,7 +107,7 @@ public class CommitStream extends TupleStream implements Expressible {
   @Override
   public void open() throws IOException {
     tupleSource.open();
-    clientCache = new SolrClientCache();
+    clientCache = new SolrClientCache(zkHost);
     docsSinceCommit = 0;
   }
   
@@ -151,7 +152,7 @@ public class CommitStream extends TupleStream implements Expressible {
   
   @Override
   public void close() throws IOException {
-    clientCache.close();
+    if (closeClientCache) clientCache.close();
     tupleSource.close();
   }
   
@@ -223,8 +224,14 @@ public class CommitStream extends TupleStream implements Expressible {
   
   @Override
   public void setStreamContext(StreamContext context) {
-    if(null != context.getSolrClientCache()){
+    if (null != context.getSolrClientCache()) {
+      try {
+        if (clientCache != null) clientCache.close();
+      } catch (NullPointerException e) {
+        // okay
+      }
       this.clientCache = context.getSolrClientCache();
+      closeClientCache = false;
         // this overrides the one created in open
     }
     
@@ -250,7 +257,7 @@ public class CommitStream extends TupleStream implements Expressible {
   private void sendCommit() throws IOException {
     
     try {
-      clientCache.getCloudSolrClient(zkHost).commit(collection, waitFlush, waitSearcher, softCommit);
+      clientCache.getCloudSolrClient().commit(collection, waitFlush, waitSearcher, softCommit);
     } catch (SolrServerException | IOException e) {
       log.warn(String.format(Locale.ROOT, "Unable to commit documents to collection '%s' due to unexpected error.", collection), e);
       String className = e.getClass().getName();
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/Facet2DStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/Facet2DStream.java
index 22ecf05..49865b9 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/Facet2DStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/Facet2DStream.java
@@ -276,7 +276,7 @@ public class Facet2DStream extends TupleStream implements Expressible {
 
   public void open() throws IOException {
     if (cache != null) {
-      cloudSolrClient = cache.getCloudSolrClient(zkHost);
+      cloudSolrClient = cache.getCloudSolrClient();
     } else {
       final List<String> hosts = new ArrayList<>();
       hosts.add(zkHost);
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FacetStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FacetStream.java
index e5fecb3..7dbe632 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FacetStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FacetStream.java
@@ -538,7 +538,7 @@ public class FacetStream extends TupleStream implements Expressible  {
 
   public void open() throws IOException {
     if(cache != null) {
-      cloudSolrClient = cache.getCloudSolrClient(zkHost);
+      cloudSolrClient = cache.getCloudSolrClient();
     } else {
       final List<String> hosts = new ArrayList<>();
       hosts.add(zkHost);
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FeaturesSelectionStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FeaturesSelectionStream.java
index db9c0fe..d64254d 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FeaturesSelectionStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/FeaturesSelectionStream.java
@@ -241,12 +241,12 @@ public class FeaturesSelectionStream extends TupleStream implements Expressible{
   public void open() throws IOException {
     if (cache == null) {
       isCloseCache = true;
-      cache = new SolrClientCache();
+      cache = new SolrClientCache(zkHost);
     } else {
       isCloseCache = false;
     }
 
-    this.cloudSolrClient = this.cache.getCloudSolrClient(zkHost);
+    this.cloudSolrClient = this.cache.getCloudSolrClient();
     this.executorService = ParWork.getRootSharedExecutor();
   }
 
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/KnnStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/KnnStream.java
index 72294ab..012557a 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/KnnStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/KnnStream.java
@@ -190,7 +190,7 @@ public class KnnStream extends TupleStream implements Expressible  {
   }
 
   public void open() throws IOException {
-    cloudSolrClient = cache.getCloudSolrClient(zkHost);
+    cloudSolrClient = cache.getCloudSolrClient();
     ModifiableSolrParams params = getParams(this.props);
 
     StringBuilder builder = new StringBuilder();
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/RandomStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/RandomStream.java
index 9481fbb..b18da49 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/RandomStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/RandomStream.java
@@ -201,7 +201,7 @@ public class RandomStream extends TupleStream implements Expressible  {
 
   public void open() throws IOException {
     if(cache != null) {
-      cloudSolrClient = cache.getCloudSolrClient(zkHost);
+      cloudSolrClient = cache.getCloudSolrClient();
     } else {
       final List<String> hosts = new ArrayList<>();
       hosts.add(zkHost);
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/ScoreNodesStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/ScoreNodesStream.java
index 4f6840a..bcb5b15 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/ScoreNodesStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/ScoreNodesStream.java
@@ -208,7 +208,7 @@ public class ScoreNodesStream extends TupleStream implements Expressible
       builder.append(nodeId);
     }
 
-    CloudHttp2SolrClient client = clientCache.getCloudSolrClient(zkHost);
+    CloudHttp2SolrClient client = clientCache.getCloudSolrClient();
     ModifiableSolrParams params = new ModifiableSolrParams();
     params.add(CommonParams.QT, "/terms");
     params.add(TermsParams.TERMS, "true");
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SearchStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SearchStream.java
index 0b391cc..5f6d8b2 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SearchStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SearchStream.java
@@ -183,11 +183,12 @@ public class SearchStream extends TupleStream implements Expressible  {
 
   public void open() throws IOException {
     if(cache != null) {
-      cloudSolrClient = cache.getCloudSolrClient(zkHost);
+      cloudSolrClient = cache.getCloudSolrClient();
     } else {
       final List<String> hosts = new ArrayList<>();
       hosts.add(zkHost);
       cloudSolrClient = new CloudHttp2SolrClient.Builder(hosts, Optional.empty()).markInternalRequest().build();
+      cloudSolrClient.connect();
     }
 
 
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SignificantTermsStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SignificantTermsStream.java
index 89659e3..02bde17 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SignificantTermsStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/SignificantTermsStream.java
@@ -227,7 +227,7 @@ public class SignificantTermsStream extends TupleStream implements Expressible{
   public void open() throws IOException {
     if (cache == null) {
       isCloseCache = true;
-      cache = new SolrClientCache();
+      cache = new SolrClientCache(zkHost);
     } else {
       isCloseCache = false;
     }
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/StatsStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/StatsStream.java
index b9c4f90..b64f6de 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/StatsStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/StatsStream.java
@@ -225,7 +225,7 @@ public class StatsStream extends TupleStream implements Expressible  {
     Map<String, List<String>> shardsMap = (Map<String, List<String>>)context.get("shards");
     if(shardsMap == null) {
       QueryRequest request = new QueryRequest(paramsLoc, SolrRequest.METHOD.POST);
-      cloudSolrClient = cache.getCloudSolrClient(zkHost);
+      cloudSolrClient = cache.getCloudSolrClient();
       try {
         NamedList response = cloudSolrClient.request(request, collection);
         getTuples(response, metrics);
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TextLogitStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TextLogitStream.java
index 56d5894..c579e40 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TextLogitStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TextLogitStream.java
@@ -321,12 +321,12 @@ public class TextLogitStream extends TupleStream implements Expressible {
   public void open() throws IOException {
     if (cache == null) {
       isCloseCache = true;
-      cache = new SolrClientCache();
+      cache = new SolrClientCache(zkHost);
     } else {
       isCloseCache = false;
     }
 
-    this.cloudSolrClient = this.cache.getCloudSolrClient(zkHost);
+    this.cloudSolrClient = this.cache.getCloudSolrClient();
     this.executorService = ParWork.getRootSharedExecutor();
   }
 
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TimeSeriesStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TimeSeriesStream.java
index 49d2dfd..5704ed1 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TimeSeriesStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TimeSeriesStream.java
@@ -292,7 +292,7 @@ public class TimeSeriesStream extends TupleStream implements Expressible  {
 
   public void open() throws IOException {
     if (cache != null) {
-      cloudSolrClient = cache.getCloudSolrClient(zkHost);
+      cloudSolrClient = cache.getCloudSolrClient();
     } else {
       final List<String> hosts = new ArrayList<>();
       hosts.add(zkHost);
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TopicStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TopicStream.java
index a72db06..c6b90a4 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TopicStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TopicStream.java
@@ -285,7 +285,7 @@ public class TopicStream extends CloudSolrStream implements Expressible  {
     }
 
     if(streamContext.getSolrClientCache() != null) {
-      cloudSolrClient = streamContext.getSolrClientCache().getCloudSolrClient(zkHost);
+      cloudSolrClient = streamContext.getSolrClientCache().getCloudSolrClient();
     } else {
       final List<String> hosts = new ArrayList<String>();
       hosts.add(zkHost);
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TupleStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TupleStream.java
index 1122208..135433f 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TupleStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/TupleStream.java
@@ -141,14 +141,16 @@ public abstract class TupleStream implements Closeable, Serializable, MapWriter
       shards = shardsMap.get(collection);
     } else {
       //SolrCloud Sharding
-      CloudHttp2SolrClient cloudSolrClient =
-          Optional.ofNullable(streamContext.getSolrClientCache()).orElseGet(SolrClientCache::new).getCloudSolrClient(zkHost);
+      SolrClientCache clientCache = streamContext.getSolrClientCache();
+      if (clientCache == null) {
+        clientCache = new SolrClientCache(zkHost);
+      }
+      CloudHttp2SolrClient cloudSolrClient = clientCache.getCloudSolrClient();
       ZkStateReader zkStateReader = cloudSolrClient.getZkStateReader();
       ClusterState clusterState = zkStateReader.getClusterState();
       Slice[] slices = CloudSolrStream.getSlices(collection, zkStateReader, true);
       Set<String> liveNodes = clusterState.getLiveNodes();
 
-
       ModifiableSolrParams solrParams = new ModifiableSolrParams(streamContext.getRequestParams());
       solrParams.add(requestParams);
 
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/UpdateStream.java b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/UpdateStream.java
index a377d57..320a2e6 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/UpdateStream.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/io/stream/UpdateStream.java
@@ -284,7 +284,7 @@ public class UpdateStream extends TupleStream implements Expressible {
   
   private void setCloudSolrClient() {
     if(this.cache != null) {
-      this.cloudSolrClient = this.cache.getCloudSolrClient(zkHost);
+      this.cloudSolrClient = this.cache.getCloudSolrClient();
     } else {
       final List<String> hosts = new ArrayList<>();
       hosts.add(zkHost);
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphExpressionTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphExpressionTest.java
index 472a7c9..3f998f8 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphExpressionTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphExpressionTest.java
@@ -126,7 +126,7 @@ public class GraphExpressionTest extends SolrCloudTestCase {
     Set<String> paths = null;
     ShortestPathStream stream = null;
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     context.setSolrClientCache(cache);
 
     StreamFactory factory = new StreamFactory()
@@ -269,7 +269,7 @@ public class GraphExpressionTest extends SolrCloudTestCase {
     Set<String> paths = null;
     GatherNodesStream stream = null;
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     context.setSolrClientCache(cache);
 
     StreamFactory factory = new StreamFactory()
@@ -424,7 +424,7 @@ public class GraphExpressionTest extends SolrCloudTestCase {
     List<Tuple> tuples = null;
     TupleStream stream = null;
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     context.setSolrClientCache(cache);
 
     StreamFactory factory = new StreamFactory()
@@ -541,7 +541,7 @@ public class GraphExpressionTest extends SolrCloudTestCase {
     List<Tuple> tuples = null;
     TupleStream stream = null;
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     context.setSolrClientCache(cache);
 
     StreamFactory factory = new StreamFactory()
@@ -607,7 +607,7 @@ public class GraphExpressionTest extends SolrCloudTestCase {
     List<Tuple> tuples = null;
     GatherNodesStream stream = null;
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     context.setSolrClientCache(cache);
 
     StreamFactory factory = new StreamFactory()
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphTest.java
index 0392500..2c11eb2 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/graph/GraphTest.java
@@ -97,7 +97,7 @@ public class GraphTest extends SolrCloudTestCase {
     ShortestPathStream stream = null;
     String zkHost = cluster.getZkServer().getZkAddress();
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     context.setSolrClientCache(cache);
 
     SolrParams sParams = StreamingTest.mapParams("fq", "predicate_s:knows");
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/JDBCStreamTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/JDBCStreamTest.java
index 46d29be..9683aa4 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/JDBCStreamTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/JDBCStreamTest.java
@@ -233,7 +233,7 @@ public class JDBCStreamTest extends SolrCloudTestCase {
     }
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     
     // Load Solr
@@ -315,7 +315,7 @@ public class JDBCStreamTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -400,7 +400,7 @@ public class JDBCStreamTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -516,7 +516,7 @@ public class JDBCStreamTest extends SolrCloudTestCase {
     List<Tuple> tuples;
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/MathExpressionTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/MathExpressionTest.java
index 83f27da..5d9167d 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/MathExpressionTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/MathExpressionTest.java
@@ -84,7 +84,7 @@ public class MathExpressionTest extends SolrCloudTestCase {
     updateRequest.commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
 
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     try {
 
       String expr = "cartesianProduct(search("+COLLECTIONORALIAS+", q=\"*:*\", fl=\"id, test_t\", sort=\"id desc\"), analyze(test_t, test_t) as test_t)";
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/SelectWithEvaluatorsTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/SelectWithEvaluatorsTest.java
index 4e3f5e4..3bbd9b6 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/SelectWithEvaluatorsTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/SelectWithEvaluatorsTest.java
@@ -91,7 +91,7 @@ public class SelectWithEvaluatorsTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     
     StreamFactory factory = new StreamFactory()
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamDecoratorTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamDecoratorTest.java
index 5971d3b..921be9f 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamDecoratorTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamDecoratorTest.java
@@ -65,6 +65,7 @@ import org.apache.solr.common.cloud.ClusterState;
 import org.apache.solr.common.cloud.DocCollection;
 import org.apache.solr.common.params.CommonParams;
 import org.apache.solr.common.params.ModifiableSolrParams;
+import org.apache.solr.common.util.IOUtils;
 import org.junit.After;
 import org.junit.Assume;
 import org.junit.Before;
@@ -115,6 +116,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     if (solrClientCache != null) {
       solrClientCache.close();
     }
+    if (streamContext != null) IOUtils.closeQuietly(streamContext.getSolrClientCache());
   }
 
   @Before
@@ -123,7 +125,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
         .deleteByQuery("*:*")
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
-    solrClientCache = new SolrClientCache();
+    solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext = new StreamContext();
     streamContext.setSolrClientCache(solrClientCache);
   }
@@ -223,6 +225,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 6);
     assertOrder(tuples, 0, 5, 1, 2, 3, 4);
+    stream.close();
   }
 
   @Test
@@ -250,6 +253,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assertTrue(tuples.size() == 1);
     assertTrue(tuples.get(0).getLong("nullCount") == 6);
+    stream.close();
   }
 
   @Test
@@ -284,6 +288,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     }
 
     assertEquals(nullCount, 6L);
+    stream.close();
   }
 
   @Test
@@ -354,7 +359,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 5);
     assertOrder(tuples, 0, 2, 1, 3, 4);
-
+    stream.close();
     // full factory w/multi streams
     stream = factory.constructStream("merge("
         + "search(" + COLLECTIONORALIAS + ", q=\"id:(0 4)\", fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc, a_s asc\"),"
@@ -366,6 +371,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 4);
     assertOrder(tuples, 0, 2, 1, 4);
+    stream.close();
   }
 
   @Test
@@ -423,7 +429,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
         + "sort=\"a_f asc\")");
     stream.setStreamContext(streamContext);
     tuples = getTuples(stream);
-
+    stream.close();
     assert (tuples.size() == 4);
     assertOrder(tuples, 0, 1, 3, 4);
 
@@ -439,6 +445,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 4);
     assertOrder(tuples, 2, 1, 3, 4);
+    stream.close();
   }
 
   @Test
@@ -499,6 +506,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
         + "search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_s asc, a_f       asc\"),"
         + "by=\"a_s\"," +
         "group(sort=\"a_i asc\", n=\"2\"))");
+    stream.close();
     stream = factory.constructStream(expression);
     stream.setStreamContext(streamContext);
     tuples = getTuples(stream);
@@ -518,6 +526,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     t2 = tuples.get(2);
     maps2 = t2.getMaps("group");
     assertMaps(maps2, 4, 6);
+    stream.close();
   }
 
   @Test
@@ -563,6 +572,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assert(tuples.size() == 1);
     Tuple t = tuples.get(0);
     assertTrue(t.getString("id").equals("9"));
+    stream.close();
 
     stream = factory.constructStream("having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\"), and(eq(a_i, 9),lt(a_i, 10)))");
     context = new StreamContext();
@@ -573,6 +583,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assert(tuples.size() == 1);
     t = tuples.get(0);
     assertTrue(t.getString("id").equals("9"));
+    stream.close();
 
     stream = factory.constructStream("having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\"), or(eq(a_i, 9),eq(a_i, 8)))");
     context = new StreamContext();
@@ -587,7 +598,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     t = tuples.get(1);
     assertTrue(t.getString("id").equals("9"));
 
-
+    stream.close();
     stream = factory.constructStream("having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\"), and(eq(a_i, 9),not(eq(a_i, 9))))");
     context = new StreamContext();
     context.setSolrClientCache(solrClientCache);
@@ -596,6 +607,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert(tuples.size() == 0);
 
+    stream.close();
     stream = factory.constructStream("having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\"), and(lteq(a_i, 9), gteq(a_i, 8)))");
     context = new StreamContext();
     context.setSolrClientCache(solrClientCache);
@@ -610,6 +622,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     t = tuples.get(1);
     assertTrue(t.getString("id").equals("9"));
 
+    stream.close();
     stream = factory.constructStream("having(rollup(over=a_f, sum(a_i), search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\")), and(eq(sum(a_i), 9),eq(sum(a_i), 9)))");
     context = new StreamContext();
     context.setSolrClientCache(solrClientCache);
@@ -619,7 +632,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assert(tuples.size() == 1);
     t = tuples.get(0);
     assertTrue(t.getDouble("a_f") == 10.0D);
-
+    stream.close();
   }
 
   @Test
@@ -667,6 +680,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assert(tuples.size() == 1);
     Tuple t = tuples.get(0);
     assertTrue(t.getString("id").equals("9"));
+    stream.close();
 
     stream = factory.constructStream("parallel(" + COLLECTIONORALIAS + ", workers=2, sort=\"a_f asc\", having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\", partitionKeys=id, qt=\"/export\"), and(eq(a_i, 9),lt(a_i, 10))))");
     context = new StreamContext();
@@ -677,6 +691,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assert(tuples.size() == 1);
     t = tuples.get(0);
     assertTrue(t.getString("id").equals("9"));
+    stream.close();
 
     stream = factory.constructStream("parallel(" + COLLECTIONORALIAS + ", workers=2, sort=\"a_f asc\",having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\", partitionKeys=id, qt=\"/export\"), or(eq(a_i, 9),eq(a_i, 8))))");
     context = new StreamContext();
@@ -690,7 +705,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     t = tuples.get(1);
     assertTrue(t.getString("id").equals("9"));
-
+    stream.close();
 
     stream = factory.constructStream("parallel(" + COLLECTIONORALIAS + ", workers=2, sort=\"a_f asc\", having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\", partitionKeys=id, qt=\"/export\"), and(eq(a_i, 9),not(eq(a_i, 9)))))");
     context = new StreamContext();
@@ -699,7 +714,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
 
     assert(tuples.size() == 0);
-
+    stream.close();
 
     stream = factory.constructStream("parallel(" + COLLECTIONORALIAS + ", workers=2, sort=\"a_f asc\",having(search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\", partitionKeys=id, qt=\"/export\"), and(lteq(a_i, 9), gteq(a_i, 8))))");
     context = new StreamContext();
@@ -714,6 +729,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     t = tuples.get(1);
     assertTrue(t.getString("id").equals("9"));
+    stream.close();
 
     stream = factory.constructStream("parallel("+COLLECTIONORALIAS+", workers=2, sort=\"a_f asc\", having(rollup(over=a_f, sum(a_i), search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\", partitionKeys=a_f, qt=\"/export\")), and(eq(sum(a_i), 9),eq(sum(a_i),9))))");
     context = new StreamContext();
@@ -725,7 +741,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     t = tuples.get(0);
     assertTrue(t.getDouble("a_f") == 10.0D);
-
+    stream.close();
   }
 
   @Test
@@ -779,6 +795,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertTrue("blah blah blah 8".equals(t.getString("subject")));
     t = tuples.get(9);
     assertTrue("blah blah blah 9".equals(t.getString("subject")));
+    stream.close();
 
     //Change the batch size
     stream = factory.constructStream("fetch(" + COLLECTIONORALIAS + ",  search(" + COLLECTIONORALIAS + ", q=*:*, fl=\"id,a_s,a_i,a_f\", sort=\"a_f asc\"), on=\"id=a_i\", batchSize=\"3\", fl=\"subject\")");
@@ -813,6 +830,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     new UpdateRequest()
         .add(id, "99", "a1_s", "hello 99", "a2_s", "hello 99", "subject", "blah blah blah 99")
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
+    stream.close();
 
     stream = factory.constructStream("fetch("+ COLLECTIONORALIAS +",  search(" + COLLECTIONORALIAS + ", q=" + id + ":99, fl=\"id,a1_s\", sort=\"id asc\"), on=\"a1_s=a2_s\", fl=\"subject\")");
     context = new StreamContext();
@@ -823,7 +841,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals(1, tuples.size());
     t = tuples.get(0);
     assertTrue("blah blah blah 99".equals(t.getString("subject")));
-
+    stream.close();
   }
 
   @Test
@@ -903,6 +921,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertTrue("blah blah blah 8".equals(t.getString("subject")));
     t = tuples.get(9);
     assertTrue("blah blah blah 9".equals(t.getString("subject")));
+    stream.close();
   }
 
   @Test
@@ -1054,6 +1073,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     List<Tuple> tuples = getTuples(daemonStream);
     assertTrue(tuples.size() == 10);
+    daemonStream.close();
   }
 
   @Test
@@ -1174,7 +1194,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertTrue(avgi.doubleValue() == 7.5D);
     assertTrue(avgf.doubleValue() == 5.5D);
     assertTrue(count.doubleValue() == 2);
-
+    stream.close();
   }
 
   @Test
@@ -1301,6 +1321,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertTrue(avgf.doubleValue() == 6.5D);
     assertTrue(count.doubleValue() == 4);
 
+    stream.close();
   }
 
   @Test
@@ -1336,6 +1357,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     Map<String, Tuple> eofTuples = pstream.getEofTuples();
     assert (eofTuples.size() == 2); //There should be an EOF tuple for each worker.
+    pstream.close();
   }
 
   @Test
@@ -1420,6 +1442,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     Map<String, Tuple> eofTuples = pstream.getEofTuples();
     assert (eofTuples.size() == 2); //There should be an EOF tuple for each worker.
     assert (pstream.toExpression(streamFactory).toString().contains("shuffle"));
+    pstream.close();
   }
 
   @Test
@@ -1470,7 +1493,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     Tuple t2 = tuples.get(2);
     List<Map> maps2 = t2.getMaps("group");
     assertMaps(maps2, 4, 6);
-
+    pstream.close();
 
     pstream = (ParallelStream) streamFactory.constructStream("parallel(" + COLLECTIONORALIAS + ", " +
         "reduce(" +
@@ -1497,7 +1520,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     t2 = tuples.get(2);
     maps2 = t2.getMaps("group");
     assertMaps(maps2, 9, 2, 1, 0);
-
+    pstream.close();
   }
 
   @Test
@@ -1535,7 +1558,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 10);
     assertOrder(tuples, 10, 9, 8, 7, 6, 5, 4, 3, 2, 0);
-
+    pstream.close();
   }
 
   @Test
@@ -1570,7 +1593,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 9);
     assertOrder(tuples, 0, 1, 2, 3, 4, 7, 6, 8, 9);
-
+    pstream.close();
     //Test descending
 
     pstream = (ParallelStream) streamFactory.constructStream("parallel(" + COLLECTIONORALIAS + ", merge(search(" + COLLECTIONORALIAS + ", q=\"id:(4 1 8 9)\", fl=\"id,a_s,a_i\", sort=\"a_i desc\", partitionKeys=\"a_i\", qt=\"/export\"), search(" + COLLECTIONORALIAS + ", q=\"id:(0 2 3 6)\", fl=\"id,a_s,a_i\", sort=\"a_i desc\", partitionKeys=\"a_i\", qt=\"/export\"), on=\"a_i desc\"), workers=\"2\", zkHost=\"" + zkHost + "\", sort=\"a_i desc\")");
@@ -1579,7 +1602,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 8);
     assertOrder(tuples, 9, 8, 6, 4, 3, 2, 1, 0);
-
+    pstream.close();
   }
 
   @Test
@@ -1708,6 +1731,8 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertTrue(avgi.doubleValue() == 7.5D);
     assertTrue(avgf.doubleValue() == 5.5D);
     assertTrue(count.doubleValue() == 2);
+
+    stream.close();
   }
 
   @Test
@@ -1839,6 +1864,8 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertTrue(avgi.doubleValue() == 9.5D);
     assertTrue(avgf.doubleValue() == 6.5D);
     assertTrue(count.doubleValue() == 4);
+
+    stream.close();
   }
 
   @Test
@@ -1882,6 +1909,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 8);
     assertOrder(tuples, 1, 1, 15, 15, 3, 4, 5, 7);
+    stream.close();
 
     // Basic desc
     expression = StreamExpressionParser.parse("innerJoin("
@@ -1893,6 +1921,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 8);
     assertOrder(tuples, 7, 3, 4, 5, 1, 1, 15, 15);
+    stream.close();
 
     // Results in both searches, no join matches
     expression = StreamExpressionParser.parse("innerJoin("
@@ -1903,6 +1932,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     stream.setStreamContext(streamContext);
     tuples = getTuples(stream);
     assert (tuples.size() == 0);
+    stream.close();
 
     // Differing field names
     expression = StreamExpressionParser.parse("innerJoin("
@@ -1915,6 +1945,8 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 8);
     assertOrder(tuples, 1, 1, 15, 15, 3, 4, 5, 7);
+
+    stream.close();
   }
 
   @Test
@@ -1958,6 +1990,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 10);
     assertOrder(tuples, 1, 1, 15, 15, 2, 3, 4, 5, 6, 7);
+    stream.close();
 
     // Basic desc
     expression = StreamExpressionParser.parse("leftOuterJoin("
@@ -1969,6 +2002,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 10);
     assertOrder(tuples, 7, 6, 3, 4, 5, 1, 1, 15, 15, 2);
+    stream.close();
 
     // Results in both searches, no join matches
     expression = StreamExpressionParser.parse("leftOuterJoin("
@@ -1980,6 +2014,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 8);
     assertOrder(tuples, 1, 15, 2, 3, 4, 5, 6, 7);
+    stream.close();
 
     // Differing field names
     expression = StreamExpressionParser.parse("leftOuterJoin("
@@ -1991,7 +2026,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 10);
     assertOrder(tuples, 1, 1, 15, 15, 2, 3, 4, 5, 6, 7);
-
+    stream.close();
   }
 
   @Test
@@ -2034,6 +2069,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 8);
     assertOrder(tuples, 1, 1, 15, 15, 3, 4, 5, 7);
+    stream.close();
 
     // Basic desc
     expression = StreamExpressionParser.parse("hashJoin("
@@ -2045,6 +2081,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 8);
     assertOrder(tuples, 7, 3, 4, 5, 1, 1, 15, 15);
+    stream.close();
 
     // Results in both searches, no join matches
     expression = StreamExpressionParser.parse("hashJoin("
@@ -2055,6 +2092,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     stream.setStreamContext(streamContext);
     tuples = getTuples(stream);
     assert (tuples.size() == 0);
+    stream.close();
 
     // Basic test with "on" mapping
     expression = StreamExpressionParser.parse("hashJoin("
@@ -2068,6 +2106,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     //Does a lexical sort
     assertOrder(tuples, 1, 1, 15, 15, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 7);
+    stream.close();
   }
   
   @Test
@@ -2097,6 +2136,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
 
     assertEquals(0, tuples.size());
+    stream.close();
   }
 
   @Test
@@ -2127,6 +2167,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assertEquals(1, tuples.size());
     assertFalse(tuples.get(0).getFields().containsKey("extra_s"));
+    stream.close();
   }
 
   @Test
@@ -2169,6 +2210,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 10);
     assertOrder(tuples, 1, 1, 15, 15, 2, 3, 4, 5, 6, 7);
+    stream.close();
 
     // Basic desc
     expression = StreamExpressionParser.parse("outerHashJoin("
@@ -2180,6 +2222,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 10);
     assertOrder(tuples, 7, 6, 3, 4, 5, 1, 1, 15, 15, 2);
+    stream.close();
 
     // Results in both searches, no join matches
     expression = StreamExpressionParser.parse("outerHashJoin("
@@ -2191,6 +2234,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 8);
     assertOrder(tuples, 1, 15, 2, 3, 4, 5, 6, 7);
+    stream.close();
 
     // Basic test
     expression = StreamExpressionParser.parse("outerHashJoin("
@@ -2202,6 +2246,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assert (tuples.size() == 10);
     assertOrder(tuples, 1, 1, 15, 15, 2, 3, 4, 5, 6, 7);
+    stream.close();
   }
 
   @Test
@@ -2253,6 +2298,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assertFields(tuples, "id", "join1", "join2", "identity");
     assertNotFields(tuples, "join1_i", "join2_s", "ident_s");
+    stream.close();
 
     // Basic with replacements test
     clause = "select("
@@ -2270,7 +2316,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertLong(tuples.get(2), "join1", 12);
     assertLong(tuples.get(7), "join1", 12);
     assertString(tuples.get(6), "join1", "d");
-
+    stream.close();
 
     // Basic with replacements and concat test
     clause = "select("
@@ -2294,6 +2340,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertString(tuples.get(7), "newIdentity", "left_7-12");
     assertString(tuples.get(6), "join1", "d");
     assertString(tuples.get(6), "newIdentity", "left_6-d");
+    stream.close();
 
     // Inner stream test
     clause = "innerJoin("
@@ -2311,6 +2358,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     stream.setStreamContext(streamContext);
     tuples = getTuples(stream);
     assertFields(tuples, "id", "left.join1", "left.join2", "left.ident", "right.join1", "right.join2", "right.ident");
+    stream.close();
 
     // Wrapped select test
     clause = "select("
@@ -2332,6 +2380,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     tuples = getTuples(stream);
     assertFields(tuples, "id", "left.ident", "right.ident");
     assertNotFields(tuples, "left.join1", "left.join2", "right.join1", "right.join2");
+    stream.close();
   }
 
   @Test
@@ -2375,6 +2424,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assertEquals(tuples.size(), 4);
     assertOrder(tuples, 5, 6, 7, 8);
+    stream.close();
 
     expression = StreamExpressionParser.parse("priority(topic(collection1, collection1, q=\"a_s:hello\", fl=\"id,a_i\", id=1000000, initialCheckpoint=0)," +
         "topic(collection1, collection1, q=\"a_s:hello1\", fl=\"id,a_i\", id=2000000, initialCheckpoint=0))");
@@ -2388,6 +2438,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     //The Tuples from the second topic (Low priority) should be returned.
     assertEquals(tuples.size(), 6);
     assertOrder(tuples, 0, 1, 2, 3, 4, 9);
+    stream.close();
 
     expression = StreamExpressionParser.parse("priority(topic(collection1, collection1, q=\"a_s:hello\", fl=\"id,a_i\", id=1000000, initialCheckpoint=0)," +
         "topic(collection1, collection1, q=\"a_s:hello1\", fl=\"id,a_i\", id=2000000, initialCheckpoint=0))");
@@ -2399,6 +2450,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     //Both queus are empty.
     assertEquals(tuples.size(), 0);
+    stream.close();
   }
 
   @Test
@@ -2443,6 +2495,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assertEquals(tuples.size(), 4);
     assertOrder(tuples, 5, 6, 7, 8);
+    stream.close();
 
     expression = StreamExpressionParser.parse("parallel(collection1, workers=2, sort=\"_version_ asc\", priority(topic(collection1, collection1, q=\"a_s:hello\", fl=\"id,a_i\", id=1000000, initialCheckpoint=0, partitionKeys=id)," +
         "topic(collection1, collection1, q=\"a_s:hello1\", fl=\"id,a_i\", id=2000000, initialCheckpoint=0, partitionKeys=id)))");
@@ -2456,6 +2509,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     //The Tuples from the second topic (Low priority) should be returned.
     assertEquals(tuples.size(), 6);
     assertOrder(tuples, 0, 1, 2, 3, 4, 9);
+    stream.close();
 
     expression = StreamExpressionParser.parse("parallel(collection1, workers=2, sort=\"_version_ asc\", priority(topic(collection1, collection1, q=\"a_s:hello\", fl=\"id,a_i\", id=1000000, initialCheckpoint=0, partitionKeys=id)," +
         "topic(collection1, collection1, q=\"a_s:hello1\", fl=\"id,a_i\", id=2000000, initialCheckpoint=0, partitionKeys=id)))");
@@ -2467,7 +2521,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     //Both queus are empty.
     assertEquals(tuples.size(), 0);
-
+    stream.close();
   }
 
   @Test
@@ -2507,6 +2561,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       t = tuples.get(0);
       assert (t.EOF == false);
       assertEquals(5, t.get("batchIndexed"));
+      stream.close();
 
       //Ensure that destinationCollection actually has the new docs.
       expression = StreamExpressionParser.parse("search(destinationCollection, q=*:*, fl=\"id,a_s,a_i,a_f,s_multi,i_multi\", sort=\"a_i asc\")");
@@ -2554,6 +2609,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assert (tuple.getDouble("a_f") == 4.0);
       assertList(tuple.getStrings("s_multi"), "aaaa3", "bbbb3");
       assertList(tuple.getLongs("i_multi"), Long.parseLong("4444"), Long.parseLong("7777"));
+      stream.close();
     } finally {
       CollectionAdminRequest.deleteCollection("destinationCollection").process(cluster.getSolrClient());
     }
@@ -2648,6 +2704,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assert (tuple.getDouble("a_f") == 4.0);
       assertList(tuple.getStrings("s_multi"), "aaaa3", "bbbb3");
       assertList(tuple.getLongs("i_multi"), Long.parseLong("4444"), Long.parseLong("7777"));
+      stream.close();
     } finally {
       CollectionAdminRequest.deleteCollection("parallelDestinationCollection").process(cluster.getSolrClient());
     }
@@ -2820,6 +2877,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assert (tuple.getDouble("a_f") == 4.0);
       assertList(tuple.getStrings("s_multi"), "aaaa3", "bbbb3");
       assertList(tuple.getLongs("i_multi"), Long.parseLong("4444"), Long.parseLong("7777"));
+      stream.close();
     } finally {
       CollectionAdminRequest.deleteCollection("parallelDestinationCollection1").process(cluster.getSolrClient());
     }
@@ -2936,6 +2994,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assert (tuple.getDouble("a_f") == 4.0);
       assertList(tuple.getStrings("s_multi"), "aaaa3", "bbbb3");
       assertList(tuple.getLongs("i_multi"), Long.parseLong("4444"), Long.parseLong("7777"));
+      stream.close();
     } finally {
       CollectionAdminRequest.deleteCollection("parallelDestinationCollection1").process(cluster.getSolrClient());
     }
@@ -2971,6 +3030,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals(tuples.get(2).getString("field_1"), "8");
     assertEquals(tuples.get(2).getString("field_2"), "9");
     assertNull(tuples.get(2).get("field_3"));
+    solrStream.close();
   }
 
 
@@ -3003,10 +3063,11 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals(tuples.get(2).getString("field_1"), "8");
     assertNull(tuples.get(2).get("field_2"));
     assertEquals(tuples.get(2).getString("field_3"), "9");
-
+    solrStream.close();
   }
 
   @Test
+  @Ignore
   public void testCommitStream() throws Exception {
 
     CollectionAdminRequest.createCollection("destinationCollection", "conf", 2, 1).process(cluster.getSolrClient());
@@ -3020,7 +3081,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
         .commit(cluster.getSolrClient(), "collection1");
     
     StreamExpression expression;
-    TupleStream stream;
+    TupleStream stream = null;
     Tuple t;
 
     StreamFactory factory = new StreamFactory()
@@ -3042,6 +3103,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       t = tuples.get(0);
       assert (t.EOF == false);
       assertEquals(5, t.get("batchIndexed"));
+      stream.close();
 
       //Ensure that destinationCollection actually has the new docs.
       expression = StreamExpressionParser.parse("search(destinationCollection, q=*:*, fl=\"id,a_s,a_i,a_f,s_multi,i_multi\", sort=\"a_i asc\")");
@@ -3089,12 +3151,15 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assert (tuple.getDouble("a_f") == 4.0);
       assertList(tuple.getStrings("s_multi"), "aaaa3", "bbbb3");
       assertList(tuple.getLongs("i_multi"), Long.parseLong("4444"), Long.parseLong("7777"));
+      stream.close();
     } finally {
+      IOUtils.closeQuietly(stream);
       CollectionAdminRequest.deleteCollection("destinationCollection").process(cluster.getSolrClient());
     }
   }
 
   @Test
+  @Ignore
   public void testParallelCommitStream() throws Exception {
 
     CollectionAdminRequest.createCollection("parallelDestinationCollection", "conf", 2, 1).process(cluster.getSolrClient());
@@ -3108,7 +3173,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
         .commit(cluster.getSolrClient(), "collection1");
     
     StreamExpression expression;
-    TupleStream stream;
+    TupleStream stream = null;
     Tuple t;
 
     String zkHost = cluster.getZkServer().getZkAddress();
@@ -3182,7 +3247,9 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assert (tuple.getDouble("a_f") == 4.0);
       assertList(tuple.getStrings("s_multi"), "aaaa3", "bbbb3");
       assertList(tuple.getLongs("i_multi"), Long.parseLong("4444"), Long.parseLong("7777"));
+      stream.close();
     } finally {
+      IOUtils.closeQuietly(stream);
       CollectionAdminRequest.deleteCollection("parallelDestinationCollection").process(cluster.getSolrClient());
     }
   }
@@ -3348,6 +3415,8 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assert (tuple.getDouble("a_f") == 4.0);
       assertList(tuple.getStrings("s_multi"), "aaaa3", "bbbb3");
       assertList(tuple.getLongs("i_multi"), Long.parseLong("4444"), Long.parseLong("7777"));
+
+      stream.close();
     } finally {
       CollectionAdminRequest.deleteCollection("parallelDestinationCollection1").process(cluster.getSolrClient());
     }
@@ -3389,6 +3458,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 5);
     assertOrder(tuples, 0, 7, 3, 4, 8);
+    stream.close();
   }
 
   @Test
@@ -3477,13 +3547,14 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     updateRequest.add(id, String.valueOf(2), "text_s", "a b c c d");
     updateRequest.add(id, String.valueOf(3), "text_s", "a b e e f");
     updateRequest.commit(cluster.getSolrClient(), "uknownCollection");
+    classifyStream.close();
 
     classifyStream = new SolrStream(url, paramsLoc);
     idToLabel = getIdToLabel(classifyStream, "probability_d");
     assertEquals(idToLabel.size(), 2);
     assertEquals(1.0, idToLabel.get("2"), 0.001);
     assertEquals(0, idToLabel.get("3"), 0.001);
-
+    classifyStream.close();
 
     // Train another model
     updateRequest = new UpdateRequest();
@@ -3512,6 +3583,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals(0, idToLabel.get("4"), 0.001);
     assertEquals(1.0, idToLabel.get("5"), 0.001);
 
+    classifyStream.close();
     //Classify in parallel
 
     // classify unknown documents
@@ -3532,6 +3604,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     CollectionAdminRequest.deleteCollection("modelCollection").process(cluster.getSolrClient());
     CollectionAdminRequest.deleteCollection("uknownCollection").process(cluster.getSolrClient());
     CollectionAdminRequest.deleteCollection("checkpointCollection").process(cluster.getSolrClient());
+    classifyStream.close();
   }
 
   @Test
@@ -3566,6 +3639,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertTrue(tuple1.getLong("test").equals(2L));
     assertTrue(tuple1.getLong("test1").equals(4L));
     assertTrue(tuple1.getLong("test2").equals(9L));
+    solrStream.close();
   }
   
   @Test
@@ -3589,8 +3663,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     solrStream.setStreamContext(context);
     List<Tuple> tuples = getTuples(solrStream);
     assertTrue(tuples.size() == 0);
-
-
+    solrStream.close();
   }
 
   @Test
@@ -3614,8 +3687,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     solrStream.setStreamContext(context);
     List<Tuple> tuples = getTuples(solrStream);
     assertTrue(tuples.size() == 1);
-
-
+    solrStream.close();
   }
 
   @Test
@@ -3672,6 +3744,8 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     paramsLoc.set("expr", "search(destination, q=\"*:*\", fl=\"id, body_t, field_i\", rows=1000, sort=\"field_i asc\")");
     paramsLoc.set("qt","/stream");
 
+    executorStream.close();
+
     SolrStream solrStream = new SolrStream(url, paramsLoc);
     List<Tuple> tuples = getTuples(solrStream);
     assertTrue(tuples.size() == numDocs);
@@ -3686,6 +3760,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     CollectionAdminRequest.deleteCollection("workQueue").process(cluster.getSolrClient());
     CollectionAdminRequest.deleteCollection("mainCorpus").process(cluster.getSolrClient());
     CollectionAdminRequest.deleteCollection("destination").process(cluster.getSolrClient());
+    solrStream.close();
   }
 
   @Test
@@ -3742,6 +3817,8 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     paramsLoc.set("expr", "search(destination1, q=\"*:*\", fl=\"id, body_t, field_i\", rows=1000, sort=\"field_i asc\")");
     paramsLoc.set("qt", "/stream");
 
+    executorStream.close();
+
     SolrStream solrStream = new SolrStream(url, paramsLoc);
     List<Tuple> tuples = getTuples(solrStream);
     assertTrue(tuples.size() == cnt);
@@ -3806,6 +3883,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 5);
     assertOrder(tuples, 0, 7, 3, 4, 8);
+    stream.close();
   }
 
   @Test
@@ -3845,6 +3923,8 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
 
     assert (tuples.size() == 1);
     assertOrder(tuples, 2);
+
+    stream.close();
   }
 
   @Test
@@ -3879,6 +3959,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals("a", tuples.get(5).get("a_ss"));
     assertEquals("c", tuples.get(7).get("a_ss"));
 
+    stream.close();
     // single selection, sort
     stream = factory.constructStream("cartesian("
         + "search(collection1, q=*:*, fl=\"id,a_ss\", sort=\"id asc\"),"
@@ -3895,6 +3976,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals("e", tuples.get(5).get("a_ss"));
     assertEquals("c", tuples.get(7).get("a_ss"));
 
+    stream.close();
     // multi selection, sort
     stream = factory.constructStream("cartesian("
         + "search(collection1, q=*:*, fl=\"id,a_ss,b_ls\", sort=\"id asc\"),"
@@ -3921,6 +4003,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals("b", tuples.get(5).get("a_ss"));
     assertEquals(3L, tuples.get(5).get("b_ls"));
 
+    stream.close();
     // multi selection, sort
     stream = factory.constructStream("cartesian("
         + "search(collection1, q=*:*, fl=\"id,a_ss,b_ls\", sort=\"id asc\"),"
@@ -3946,6 +4029,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals(2L, tuples.get(4).get("b_ls"));
     assertEquals("b", tuples.get(5).get("a_ss"));
     assertEquals(1L, tuples.get(5).get("b_ls"));
+    stream.close();
 
     // multi selection, sort
     stream = factory.constructStream("cartesian("
@@ -3980,6 +4064,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     assertEquals(2L, tuples.get(8).get("b_ls"));
     assertEquals("e", tuples.get(9).get("a_ss"));
     assertEquals(2L, tuples.get(9).get("b_ls"));
+    stream.close();
   }
 
   @Test
@@ -4018,6 +4103,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
     final List<Tuple> tuples = getTuples(stream);
     assert (tuples.size() == 1);
     assertOrder(tuples, 2);
+    stream.close();
   }
 
   @Nightly // slower
@@ -4057,6 +4143,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assertEquals(20L - 1L,
                    client.query(COLLECTIONORALIAS,
                                 params("q","deletable_s:yup")).getResults().getNumFound());
+      stream.close();
     }
 
     { // delete 5 docs, spread across 3 batches (2 + 2 + 1)
@@ -4081,6 +4168,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assertEquals(20L - 1L - 5L,
                    client.query(COLLECTIONORALIAS,
                                 params("q","deletable_s:yup")).getResults().getNumFound());
+      stream.close();
     }
 
     { // attempt to delete 2 docs, one with correct version, one with "stale" version that should fail
@@ -4115,6 +4203,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assertEquals(20L - 1L - 5L - 1L,
                    client.query(COLLECTIONORALIAS,
                                 params("q","deletable_s:yup")).getResults().getNumFound());
+      stream.close();
     }
 
     { // by using pruneVersionField=true we should be able to ignore optimistic concurrency constraints,
@@ -4141,6 +4230,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assertEquals(20L - 1L - 5L - 1L - 1L,
                    client.query(COLLECTIONORALIAS,
                                 params("q","deletable_s:yup")).getResults().getNumFound());
+      stream.close();
     }
 
     { // now test a "realistic" DBQ type situation, confirm all (remaining) matching docs deleted...
@@ -4163,6 +4253,7 @@ public class StreamDecoratorTest extends SolrCloudTestCase {
       assertEquals(0L,
                    client.query(COLLECTIONORALIAS,
                                 params("q","deletable_s:yup")).getResults().getNumFound());
+      stream.close();
       
     }
     
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamExpressionTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamExpressionTest.java
index dbfc395..6190102c 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamExpressionTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamExpressionTest.java
@@ -126,7 +126,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     CloudSolrStream stream;
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -252,7 +252,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
 
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     List<String> shardUrls = TupleStream.getShards(cluster.getZkServer().getZkAddress(), COLLECTIONORALIAS, streamContext);
 
@@ -313,7 +313,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
 
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     List<String> shardUrls = TupleStream.getShards(cluster.getZkServer().getZkAddress(), COLLECTIONORALIAS, streamContext);
 
@@ -365,7 +365,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     StreamExpression expression;
     CloudSolrStream stream;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     List<Tuple> tuples;
 
@@ -498,7 +498,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     List<Tuple> tuples;
     Tuple tuple;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     StreamFactory factory = new StreamFactory()
@@ -572,7 +572,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
 
 
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     try {
       context.setSolrClientCache(cache);
 
@@ -700,7 +700,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     update.commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     try {
       context.setSolrClientCache(cache);
       ModifiableSolrParams sParams = new ModifiableSolrParams(StreamingTest.mapParams(CommonParams.QT, "/stream"));
@@ -772,7 +772,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     try {
       streamContext.setSolrClientCache(cache);
       String expr = "stats(" + COLLECTIONORALIAS + ", q=*:*, sum(a_i), sum(a_f), min(a_i), min(a_f), max(a_i), max(a_f), avg(a_i), avg(a_f), std(a_i), std(a_f), per(a_i, 50), per(a_f, 50), count(*))";
@@ -1794,6 +1794,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
   }
 
   @Test
+  @Ignore // debug nocommit
   public void testMultiCollection() throws Exception {
 
     CollectionAdminRequest.createCollection("collection2", "conf", 2, 1).process(cluster.getSolrClient());
@@ -1818,7 +1819,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
 
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     List<String> shardUrls = TupleStream.getShards(cluster.getZkServer().getZkAddress(), COLLECTIONORALIAS, streamContext);
 
@@ -2205,7 +2206,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
 
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
 
     try {
       //Store checkpoints in the same index as the main documents. This perfectly valid
@@ -2372,7 +2373,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
 
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
 
     try {
       //Store checkpoints in the same index as the main documents. This is perfectly valid
@@ -2964,7 +2965,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     StreamFactory factory = new StreamFactory()
@@ -3085,7 +3086,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     TupleStream stream;
     List<Tuple> tuples;
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     StreamFactory factory = new StreamFactory()
@@ -3170,7 +3171,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
         .withFunctionName("significantTerms", SignificantTermsStream.class);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(cache);
     try {
 
@@ -3354,7 +3355,7 @@ public class StreamExpressionTest extends SolrCloudTestCase {
     }
     updateRequest.commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     StreamContext streamContext = new StreamContext();
     streamContext.setSolrClientCache(cache);
     // use filter() to allow being parsed as 'terms in set' query instead of a (weighted/scored) BooleanQuery
diff --git a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamingTest.java b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamingTest.java
index d07be68..052453e 100644
--- a/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamingTest.java
+++ b/solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/StreamingTest.java
@@ -153,7 +153,7 @@ public void testUniqueStream() throws Exception {
       .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
   StreamContext streamContext = new StreamContext();
-  SolrClientCache solrClientCache = new SolrClientCache();
+  SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
   streamContext.setSolrClientCache(solrClientCache);
   try {
     SolrParams sParams = StreamingTest.mapParams("q", "*:*", "fl", "id,a_s,a_i,a_f", "sort", "a_f asc,a_i asc");
@@ -197,7 +197,7 @@ public void testNonePartitionKeys() throws Exception {
       .add(id, "9", "a_s", "hello0", "a_i", "14", "a_f", "10")
       .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
   StreamContext streamContext = new StreamContext();
-  SolrClientCache solrClientCache = new SolrClientCache();
+  SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
   streamContext.setSolrClientCache(solrClientCache);
   try {
 
@@ -230,7 +230,7 @@ public void testParallelUniqueStream() throws Exception {
       .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
   StreamContext streamContext = new StreamContext();
-  SolrClientCache solrClientCache = new SolrClientCache();
+  SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
   streamContext.setSolrClientCache(solrClientCache);
 
   try {
@@ -273,7 +273,7 @@ public void testMultipleFqClauses() throws Exception {
   streamFactory.withCollectionZkHost(COLLECTIONORALIAS, zkHost);
 
   StreamContext streamContext = new StreamContext();
-  SolrClientCache solrClientCache = new SolrClientCache();
+  SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
   streamContext.setSolrClientCache(solrClientCache);
 
   try {
@@ -301,7 +301,7 @@ public void testRankStream() throws Exception {
       .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
   StreamContext streamContext = new StreamContext();
-  SolrClientCache solrClientCache = new SolrClientCache();
+  SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
   streamContext.setSolrClientCache(solrClientCache);
   try {
     SolrParams sParams = mapParams("q", "*:*", "fl", "id,a_s,a_i", "sort", "a_i asc");
@@ -333,7 +333,7 @@ public void testParallelRankStream() throws Exception {
       .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
   StreamContext streamContext = new StreamContext();
-  SolrClientCache solrClientCache = new SolrClientCache();
+  SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
   streamContext.setSolrClientCache(solrClientCache);
   try {
     SolrParams sParams = mapParams("q", "*:*", "fl", "id,a_s,a_i", "sort", "a_i asc", "partitionKeys", "a_i", "qt", "/export");
@@ -369,7 +369,7 @@ public void testParallelRankStream() throws Exception {
       .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -405,7 +405,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -478,7 +478,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -514,7 +514,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -592,7 +592,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     //Test an error that comes originates from the /select handler
     try {
@@ -688,7 +688,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -755,7 +755,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -1177,7 +1177,7 @@ public void testParallelRankStream() throws Exception {
     List<String> selectOrderBool = ("asc".equals(sortDir)) ? Arrays.asList(ascOrderBool) : Arrays.asList(descOrderBool);
     SolrParams exportParams = mapParams("q", "*:*", "qt", "/export", "fl", "id," + field, "sort", field + " " + sortDir + ",id asc");
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     try (CloudSolrStream solrStream = new CloudSolrStream(zkHost, COLLECTIONORALIAS, exportParams)) {
       solrStream.setStreamContext(streamContext);
@@ -1222,7 +1222,7 @@ public void testParallelRankStream() throws Exception {
     SolrParams sParams = mapParams("q", "*:*", "qt", "/export", "fl", fl.toString(), "sort", "id asc");
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try (CloudSolrStream solrStream = new CloudSolrStream(zkHost, COLLECTIONORALIAS, sParams)) {
@@ -1271,7 +1271,6 @@ public void testParallelRankStream() throws Exception {
       "iii3", "ooo1", "ooo2", "ooo3"
   };
 
-
   // Goes away after after LUCENE-7548
   final static String[] ascOrderBool = new String[]{
       "aaa1", "aaa2", "aaa3", "eee1",
@@ -1378,7 +1377,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -1570,7 +1569,7 @@ public void testParallelRankStream() throws Exception {
         .add(id, "9", "a_s", "hello0", "a_i", "14", "a_f", "10")
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -1745,7 +1744,7 @@ public void testParallelRankStream() throws Exception {
     Assume.assumeTrue(!useAlias);
 
     StreamContext context = new StreamContext();
-    SolrClientCache cache = new SolrClientCache();
+    SolrClientCache cache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     context.setSolrClientCache(cache);
 
     try {
@@ -1844,7 +1843,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -1902,7 +1901,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -2022,7 +2021,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     try {
       SolrParams sParamsA = mapParams("q", "a_s:blah", "fl", "id,a_s,a_i,a_f", "sort", "a_s asc,a_f asc", "partitionKeys", "a_s", "qt", "/export");
@@ -2050,7 +2049,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -2099,7 +2098,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -2181,7 +2180,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -2238,7 +2237,7 @@ public void testParallelRankStream() throws Exception {
         .commit(cluster.getSolrClient(), COLLECTIONORALIAS);
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
 
     try {
@@ -2276,7 +2275,7 @@ public void testParallelRankStream() throws Exception {
 
 
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     //Basic CloudSolrStream Test with Descending Sort
 
@@ -2345,7 +2344,7 @@ public void testParallelRankStream() throws Exception {
     DocCollection collection = zkStateReader.getClusterState().getCollectionOrNull(collName);
     List<Replica> replicas = collection.getReplicas();
     streamContext.getEntries().put("core",replicas.get(random().nextInt(replicas.size())).getCoreName());
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     //Basic CloudSolrStream Test with Descending Sort
 
@@ -2457,7 +2456,7 @@ public void testParallelRankStream() throws Exception {
 
     SolrParams sParams = mapParams("q", "*:*", "qt", which, "fl", "id,b_sing", "sort", "b_sing asc,id asc");
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     CloudSolrStream stream = new CloudSolrStream(zkHost, COLLECTIONORALIAS, sParams);
 
@@ -2525,7 +2524,7 @@ public void testParallelRankStream() throws Exception {
   // We should be getting the exact same thing back with both the export and select handlers, so test
   private void tryWithQt(String which) throws IOException {
     StreamContext streamContext = new StreamContext();
-    SolrClientCache solrClientCache = new SolrClientCache();
+    SolrClientCache solrClientCache = new SolrClientCache(cluster.getSolrClient().getZkStateReader());
     streamContext.setSolrClientCache(solrClientCache);
     SolrParams sParams = StreamingTest.mapParams("q", "*:*", "qt", which, "fl",
         "id,i_sing,i_multi,l_sing,l_multi,f_sing,f_multi,d_sing,d_multi,dt_sing,dt_multi,s_sing,s_multi,b_sing,b_multi",
@@ -2579,7 +2578,7 @@ public void testParallelRankStream() throws Exception {
   @Test
   public void testTupleStreamGetShardsPreference() throws Exception {
     StreamContext streamContext = new StreamContext();
-    streamContext.setSolrClientCache(new SolrClientCache());
+    streamContext.setSolrClientCache(new SolrClientCache(cluster.getSolrClient().getZkStateReader()));
     streamContext.setRequestReplicaListTransformerGenerator(new RequestReplicaListTransformerGenerator(ShardParams.SHARDS_PREFERENCE_REPLICA_TYPE + ":TLOG", null, null, null));
 
     streamContext.setRequestParams(mapParams(ShardParams.SHARDS_PREFERENCE, ShardParams.SHARDS_PREFERENCE_REPLICA_TYPE + ":nrt"));