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...t/java/com/netflix/hollow/core/read/engine/list/HollowListTypeDataElementsJoinerTest.java
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|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| package com.netflix.hollow.core.read.engine.list; | ||
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| import static org.junit.Assert.assertEquals; | ||
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| import com.netflix.hollow.core.memory.MemoryMode; | ||
| import java.io.IOException; | ||
| import org.junit.Assert; | ||
| import org.junit.Test; | ||
|
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| public class HollowListTypeDataElementsJoinerTest extends AbstractHollowListTypeDataElementsSplitJoinTest { | ||
| @Override | ||
| protected void initializeTypeStates() { | ||
| super.initializeTypeStates(); | ||
| writeStateEngine.setTargetMaxTypeShardSize(16); | ||
| } | ||
|
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| @Test | ||
| public void testJoin() throws IOException { | ||
| int[][] listContents = new int[][] { | ||
| {1000, 2000, 3000}}; | ||
| HollowListTypeReadState typeReadState = populateTypeStateWith(listContents); | ||
| assertEquals(1, typeReadState.numShards()); | ||
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| listContents = new int[][] { | ||
| {1000, 2000, 3000}, | ||
| {0}, | ||
| {} | ||
| }; | ||
| int listLen = 50; | ||
| listContents[2] = new int[listLen]; | ||
| for (int i=0; i<listLen; i++) { | ||
| listContents[2][i] = (int) Math.pow(2,7) - i; | ||
| } | ||
| HollowListTypeReadState typeReadStateSharded = populateTypeStateWith(listContents); | ||
| assertDataUnchanged(typeReadStateSharded, listContents); | ||
| assertEquals(8, typeReadStateSharded.numShards()); | ||
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| HollowListTypeDataElementsJoiner joiner = new HollowListTypeDataElementsJoiner(typeReadStateSharded.currentDataElements()); | ||
| HollowListTypeDataElements joinedDataElements = joiner.join(); | ||
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| HollowListTypeReadStateShard joinedShard = new HollowListTypeReadStateShard(); | ||
| joinedShard.setCurrentData(joinedDataElements); | ||
| typeReadState = new HollowListTypeReadState(typeReadState.getStateEngine(), MemoryMode.ON_HEAP, typeReadState.getSchema(), 1, | ||
| new HollowListTypeReadStateShard[] {joinedShard}); | ||
| assertDataUnchanged(typeReadState, listContents); | ||
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| try { | ||
| joiner = new HollowListTypeDataElementsJoiner(mockListTypeState.currentDataElements()); | ||
| joiner.join(); | ||
| Assert.fail(); | ||
| } catch (IllegalStateException e) { | ||
| // expected, numSplits should be a power of 2 | ||
| } | ||
| } | ||
|
|
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| // @Test | ||
| // public void testJoinDifferentFieldWidths() throws IOException { | ||
| // HollowListTypeReadState typeReadStateSmall = populateTypeStateWith(new int[] {1}); | ||
| // assertEquals(1, typeReadStateSmall.numShards()); | ||
| // HollowListTypeDataElements dataElementsSmall = typeReadStateSmall.currentDataElements()[0]; | ||
| // int intFieldPosSmall = dataElementsSmall.schema.getPosition("intField"); | ||
| // int widthSmall = dataElementsSmall.bitsPerField[intFieldPosSmall]; | ||
| // long valSmall = dataElementsSmall.fixedLengthData.getElementValue(dataElementsSmall.bitOffsetPerField[intFieldPosSmall], widthSmall); | ||
| // | ||
| // HollowListTypeReadState typeReadStateBig = populateTypeStateWith(new int[] {2}); | ||
| // assertEquals(1, typeReadStateBig.numShards()); | ||
| // HollowListTypeDataElements dataElementsBig = typeReadStateBig.currentDataElements()[0]; | ||
| // int intFieldPosBig = dataElementsBig.schema.getPosition("intField"); | ||
| // int widthBig = dataElementsBig.bitsPerField[intFieldPosBig]; | ||
| // long valBig = dataElementsBig.fixedLengthData.getElementValue(dataElementsBig.bitOffsetPerField[intFieldPosBig], widthBig); | ||
| // | ||
| // assertTrue(widthBig > widthSmall); | ||
| // | ||
| // HollowListTypeDataElementsJoiner joiner = new HollowListTypeDataElementsJoiner(new HollowListTypeDataElements[] | ||
| // {dataElementsSmall, dataElementsBig}); | ||
| // HollowListTypeDataElements dataElementsJoined = joiner.join(); | ||
| // int intFieldPosJoined = dataElementsJoined.schema.getPosition("intField"); | ||
| // int widthJoined = dataElementsJoined.bitsPerField[intFieldPosJoined]; | ||
| // | ||
| // long val0 = dataElementsJoined.fixedLengthData.getElementValue(dataElementsJoined.bitOffsetPerField[intFieldPosJoined], widthJoined); | ||
| // long val1 = dataElementsJoined.fixedLengthData.getElementValue(dataElementsJoined.bitsPerRecord + dataElementsJoined.bitOffsetPerField[intFieldPosJoined], widthJoined); | ||
| // | ||
| // assertEquals(widthBig, widthJoined); | ||
| // assertEquals(valSmall, val0); | ||
| // assertEquals(valBig, val1); | ||
| // } | ||
|
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| // @Test | ||
| // public void testLopsidedShards() { | ||
| // InMemoryBlobStore blobStore = new InMemoryBlobStore(); | ||
| // HollowProducer p = HollowProducer.withPublisher(blobStore) | ||
| // .withBlobStager(new HollowInMemoryBlobStager()) | ||
| // .withTypeResharding(true) | ||
| // .build(); | ||
| // | ||
| // p.initializeDataModel(schema); | ||
| // int targetSize = 64; | ||
| // p.getWriteEngine().setTargetMaxTypeShardSize(targetSize); | ||
| // long v1 = oneRunCycle(p, new int[] {0, 1, 2, 3, 4, 5, 6, 7}); | ||
| // | ||
| // HollowConsumer c = HollowConsumer | ||
| // .withBlobRetriever(blobStore) | ||
| // .withDoubleSnapshotConfig(new HollowConsumer.DoubleSnapshotConfig() { | ||
| // @Override | ||
| // public boolean allowDoubleSnapshot() { | ||
| // return false; | ||
| // } | ||
| // | ||
| // @Override | ||
| // public int maxDeltasBeforeDoubleSnapshot() { | ||
| // return Integer.MAX_VALUE; | ||
| // } | ||
| // }) | ||
| // .withSkipTypeShardUpdateWithNoAdditions() | ||
| // .build(); | ||
| // c.triggerRefreshTo(v1); | ||
| // | ||
| // assertEquals(2, c.getStateEngine().getTypeState("TestObject").numShards()); | ||
| // assertEquals(true, c.getStateEngine().isSkipTypeShardUpdateWithNoAdditions()); | ||
| // | ||
| // long v2 = oneRunCycle(p, new int[] {0, 1, 2, 3, 5, 7}); | ||
| // c.triggerRefreshTo(v2); | ||
| // assertEquals(2, c.getStateEngine().getTypeState("TestObject").numShards()); | ||
| // | ||
| // long v3 = oneRunCycle(p, new int[] { 0, 1, 3, 5}); // drop to 1 ordinal per shard, skipTypeShardWithNoAdds will make it so that maxOrdinal is adjusted | ||
| // c.triggerRefreshTo(v3); | ||
| // assertEquals(2, c.getStateEngine().getTypeState("TestObject").numShards()); | ||
| // | ||
| // long v4 = oneRunCycle(p, new int[] { 0, 1, 2, 3}); // now add another ordinal to one shard, maxOrdinals will be lopsided | ||
| // c.triggerRefreshTo(v4); | ||
| // assertEquals(2, c.getStateEngine().getTypeState("TestObject").numShards()); | ||
| // | ||
| // readStateEngine = c.getStateEngine(); | ||
| // assertDataUnchanged(3); | ||
| // | ||
| // long v5 = oneRunCycle(p, new int[] {0, 1}); | ||
| // | ||
| // // assert lopsided shards before join | ||
| // assertEquals(2, ((HollowListTypeReadState) c.getStateEngine().getTypeState("TestObject")).shardsVolatile.shards[0].dataElements.maxOrdinal); | ||
| // assertEquals(3, ((HollowListTypeReadState) c.getStateEngine().getTypeState("TestObject")).shardsVolatile.shards[1].dataElements.maxOrdinal); | ||
| // c.triggerRefreshTo(v5); | ||
| // assertEquals(1, c.getStateEngine().getTypeState("TestObject").numShards()); // joined to 1 shard | ||
| // readStateEngine = c.getStateEngine(); | ||
| // assertDataUnchanged(2); | ||
| // | ||
| // long v6 = oneRunCycle(p, new int[] {0, 1, 2, 3, 4, 5 }); | ||
| // c.triggerRefreshTo(v6); | ||
| // assertEquals(2, c.getStateEngine().getTypeState("TestObject").numShards()); // split to 2 shards | ||
| // | ||
| // long v7 = oneRunCycle(p, new int[] {8, 9}); | ||
| // c.triggerRefreshTo(v7); | ||
| // assertEquals(4, c.getStateEngine().getTypeState("TestObject").numShards()); // still 2 shards | ||
| // | ||
| // long v8 = oneRunCycle(p, new int[] {8}); | ||
| // c.triggerRefreshTo(v8); | ||
| // assertEquals(2, c.getStateEngine().getTypeState("TestObject").numShards()); // down to 1 shard | ||
| // | ||
| // c.triggerRefreshTo(v1); | ||
| // assertEquals(v1, c.getCurrentVersionId()); | ||
| // | ||
| // c.triggerRefreshTo(v8); | ||
| // assertEquals(v8, c.getCurrentVersionId()); | ||
| // } | ||
| // | ||
| // private long oneRunCycle(HollowProducer p, int recordIds[]) { | ||
| // return p.runCycle(state -> { | ||
| // HollowObjectWriteRecord rec = new HollowObjectWriteRecord(schema); | ||
| // for(int recordId : recordIds) { | ||
| // rec.reset(); | ||
| // rec.setLong("longField", recordId); | ||
| // rec.setString("stringField", "Value" + recordId); | ||
| // rec.setInt("intField", recordId); | ||
| // rec.setDouble("doubleField", recordId); | ||
| // | ||
| // state.getStateEngine().add("TestObject", rec); | ||
| // } | ||
| // }); | ||
| // } | ||
| } |
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