Added shardId to thread name. Added documentation to the methods.

src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/KinesisClientLibConfiguration.java

@@ -1298,17 +1298,30 @@ public class KinesisClientLibConfiguration {
         return this;
     }
 
+    /**
+     * @param maxCacheByteSize Max byte size for the cache at any given point of time. After this threshold is crossed
+     *                         the KinesisDataFetcher will be blocked until the cache has more space available.
+     * @return KinesisClientLibConfiguration
+     */
     public KinesisClientLibConfiguration withMaxCacheByteSize(final int maxCacheByteSize) {
         checkIsValuePositive("maxCacheByteSize", maxCacheByteSize);
         this.recordsFetcherFactory.setMaxByteSize(maxCacheByteSize);
         return this;
     }
 
+    /**
+     * @param dataFetchingStrategy The strategy for fetching data from kinesis.
+     * @return KinesisClientLibConfiguration
+     */
     public KinesisClientLibConfiguration withDataFetchingStrategy(String dataFetchingStrategy) {
         this.recordsFetcherFactory.setDataFetchingStrategy(DataFetchingStrategy.valueOf(dataFetchingStrategy.toUpperCase()));
         return this;
     }
 
+    /**
+     * @param maxRecordsCount The maximum number of records in the cache, accross all ProcessRecordInput objects
+     * @return KinesisClientLibConfiguration
+     */
     public KinesisClientLibConfiguration withMaxRecordsCount(final int maxRecordsCount) {
         checkIsValuePositive("maxRecordsCount", maxRecordsCount);
         this.recordsFetcherFactory.setMaxRecordsCount(maxRecordsCount);
@@ -1334,7 +1347,7 @@ public class KinesisClientLibConfiguration {
 
     /** 
      * @param idleMillisBetweenCalls Idle time between 2 getcalls from the data fetcher.
-     * @return
+     * @return KinesisClientLibConfiguration
      */
     public KinesisClientLibConfiguration withIdleMillisBetweenCalls(long idleMillisBetweenCalls) {
         checkIsValuePositive("IdleMillisBetweenCalls", idleMillisBetweenCalls);

src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/PrefetchGetRecordsCache.java

@@ -50,6 +50,17 @@ public class PrefetchGetRecordsCache implements GetRecordsCache {
 
     private boolean started = false;
 
+    /**
+     * Constructor
+     * 
+     * @param maxSize Max size of the queue in the cache
+     * @param maxByteSize Max byte size of the queue before blocking next get records call
+     * @param maxRecordsCount Max number of records in the queue across all ProcessRecordInput objects
+     * @param maxRecordsPerCall Max records to be returned per call
+     * @param getRecordsRetrievalStrategy Retrieval strategy for the get records call
+     * @param executorService Executor service for the cache
+     * @param idleMillisBetweenCalls maximum time to wait before dispatching the next get records call
+     */
     public PrefetchGetRecordsCache(final int maxSize, final int maxByteSize, final int maxRecordsCount,
                                    final int maxRecordsPerCall,
                                    @NonNull final GetRecordsRetrievalStrategy getRecordsRetrievalStrategy,

src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/RecordsFetcherFactory.java

@@ -24,18 +24,48 @@ public interface RecordsFetcherFactory {
     /**
      * Returns a records fetcher processor to be used for processing data records for a (assigned) shard.
      *
-     * @return Returns a record fetcher object
+     * @param getRecordsRetrievalStrategy GetRecordsRetrievalStrategy to be used with the GetRecordsCache
+     * @param shardId ShardId of the shard for which the GetRecordsCache is to be returned
+     *                
+     * @return Returns a GetRecordsCache object
      */
-    GetRecordsCache createRecordsFetcher(GetRecordsRetrievalStrategy getRecordsRetrievalStrategy);
+    GetRecordsCache createRecordsFetcher(GetRecordsRetrievalStrategy getRecordsRetrievalStrategy, String shardId);
 
+    /**
+     * This method sets the maximum number of ProcessRecordsInput objects the GetRecordsCache can hold at any give time.
+     * 
+     * @param maxSize Max size for the cache.
+     */
     void setMaxSize(int maxSize);
 
+    /**
+     * This method sets the max byte size for the GetRecordsCache. This is the sum of all the records bytes present in
+     * the cache at a given point of time.
+     * 
+     * @param maxByteSize Maximum byte size for the cache.
+     */
     void setMaxByteSize(int maxByteSize);
 
+    /**
+     * This method sets the max number of records for the GetRecordsCache. This is the sum of all the records present
+     * across all the ProcessRecordsInput in the cache at a given point of time.
+     * 
+     * @param maxRecordsCount Maximum number of records in the cache.
+     */
     void setMaxRecordsCount(int maxRecordsCount);
 
+    /**
+     * This method sets the dataFetchingStrategy to determine the type of GetRecordsCache to be used.
+     * 
+     * @param dataFetchingStrategy Fetching strategy to be used
+     */
     void setDataFetchingStrategy(DataFetchingStrategy dataFetchingStrategy);
-    
+
+    /**
+     * This method sets the maximum idle time between two get calls.
+     * 
+     * @param idleMillisBetweenCalls Sleep millis between calls.
+     */
     void setIdleMillisBetweenCalls(long idleMillisBetweenCalls);
 
 }

src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/ShardConsumer.java

@@ -234,7 +234,8 @@ class ShardConsumer {
         this.config = config;
         this.dataFetcher = kinesisDataFetcher;
         this.getRecordsCache = config.getRecordsFetcherFactory().createRecordsFetcher(
-                makeStrategy(this.dataFetcher, retryGetRecordsInSeconds, maxGetRecordsThreadPool, this.shardInfo));
+                makeStrategy(this.dataFetcher, retryGetRecordsInSeconds, maxGetRecordsThreadPool, this.shardInfo),
+                this.getShardInfo().getShardId());
     }
 
     /**

src/main/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/SimpleRecordsFetcherFactory.java

@@ -34,7 +34,7 @@ public class SimpleRecordsFetcherFactory implements RecordsFetcherFactory {
     }
 
     @Override
-    public GetRecordsCache createRecordsFetcher(GetRecordsRetrievalStrategy getRecordsRetrievalStrategy) {
+    public GetRecordsCache createRecordsFetcher(GetRecordsRetrievalStrategy getRecordsRetrievalStrategy, String shardId) {
         if(dataFetchingStrategy.equals(DataFetchingStrategy.DEFAULT)) {
             return new BlockingGetRecordsCache(maxRecords, getRecordsRetrievalStrategy, idleMillisBetweenCalls);
         } else {
@@ -42,7 +42,7 @@ public class SimpleRecordsFetcherFactory implements RecordsFetcherFactory {
                     getRecordsRetrievalStrategy,
                     Executors.newFixedThreadPool(1, new ThreadFactoryBuilder()
                             .setDaemon(true)
-                            .setNameFormat("prefetch-get-records-cache-%d")
+                            .setNameFormat("prefetch-get-records-cache-" + shardId + "-%d")
                             .build()),
                     idleMillisBetweenCalls);
         }

src/test/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/RecordsFetcherFactoryTest.java

@@ -1,19 +1,15 @@
 package com.amazonaws.services.kinesis.clientlibrary.lib.worker;
 
-import org.junit.After;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import static org.junit.Assert.assertEquals;
-import org.mockito.Mock;
-import org.mockito.Mockito;
-import org.mockito.MockitoAnnotations;
-
 import static org.hamcrest.CoreMatchers.instanceOf;
 import static org.hamcrest.MatcherAssert.assertThat;
 
-public class RecordsFetcherFactoryTest {
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
 
+public class RecordsFetcherFactoryTest {
+    private String shardId = "TestShard";
     private RecordsFetcherFactory recordsFetcherFactory;
 
     @Mock
@@ -27,14 +23,14 @@ public class RecordsFetcherFactoryTest {
 
     @Test
     public void createDefaultRecordsFetcherTest() {
-        GetRecordsCache recordsCache = recordsFetcherFactory.createRecordsFetcher(getRecordsRetrievalStrategy);
+        GetRecordsCache recordsCache = recordsFetcherFactory.createRecordsFetcher(getRecordsRetrievalStrategy, shardId);
         assertThat(recordsCache, instanceOf(BlockingGetRecordsCache.class));
     }
 
     @Test
     public void createPrefetchRecordsFetcherTest() {
         recordsFetcherFactory.setDataFetchingStrategy(DataFetchingStrategy.PREFETCH_CACHED);
-        GetRecordsCache recordsCache = recordsFetcherFactory.createRecordsFetcher(getRecordsRetrievalStrategy);
+        GetRecordsCache recordsCache = recordsFetcherFactory.createRecordsFetcher(getRecordsRetrievalStrategy, shardId);
         assertThat(recordsCache, instanceOf(PrefetchGetRecordsCache.class));
     }
 

src/test/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/ShardConsumerTest.java

@@ -341,7 +341,7 @@ public class ShardConsumerTest {
         getRecordsCache = spy(new BlockingGetRecordsCache(maxRecords,
                 new SynchronousGetRecordsRetrievalStrategy(dataFetcher),
                 0L));
-        when(recordsFetcherFactory.createRecordsFetcher(any())).thenReturn(getRecordsCache);
+        when(recordsFetcherFactory.createRecordsFetcher(any(), anyString())).thenReturn(getRecordsCache);
         
         ShardConsumer consumer =
                 new ShardConsumer(shardInfo,
@@ -471,7 +471,7 @@ public class ShardConsumerTest {
         getRecordsCache = spy(new BlockingGetRecordsCache(maxRecords,
                 new SynchronousGetRecordsRetrievalStrategy(dataFetcher),
                 0L));
-        when(recordsFetcherFactory.createRecordsFetcher(any())).thenReturn(getRecordsCache);
+        when(recordsFetcherFactory.createRecordsFetcher(any(), anyString())).thenReturn(getRecordsCache);
 
         ShardConsumer consumer =
                 new ShardConsumer(shardInfo,

src/test/java/com/amazonaws/services/kinesis/clientlibrary/lib/worker/WorkerTest.java

@@ -21,6 +21,7 @@ import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.greaterThanOrEqualTo;
 import static org.junit.Assert.fail;
 import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyString;
 import static org.mockito.Matchers.argThat;
 import static org.mockito.Matchers.eq;
 import static org.mockito.Matchers.same;
@@ -620,7 +621,7 @@ public class WorkerTest {
         RecordsFetcherFactory recordsFetcherFactory = mock(RecordsFetcherFactory.class);
         GetRecordsCache getRecordsCache = mock(GetRecordsCache.class);
         when(config.getRecordsFetcherFactory()).thenReturn(recordsFetcherFactory);
-        when(recordsFetcherFactory.createRecordsFetcher(any())).thenReturn(getRecordsCache);
+        when(recordsFetcherFactory.createRecordsFetcher(any(), anyString())).thenReturn(getRecordsCache);
         when(getRecordsCache.getNextResult()).thenReturn(new ProcessRecordsInput().withRecords(Collections.emptyList()).withMillisBehindLatest(0L));
 
         WorkerThread workerThread = runWorker(shardList,