DRILL-7724: Refactor metadata controller batch
Also changed for (;;) infinite loops to
while (true) as preferred by IntelliJ.
diff --git a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveStoragePlugin.java b/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveStoragePlugin.java
index 4e7fde9..5f7061e 100644
--- a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveStoragePlugin.java
+++ b/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveStoragePlugin.java
@@ -146,7 +146,7 @@
} catch (Throwable e) {
// Unwrap exception
Throwable ex = e;
- for (;;) {
+ while (true) {
// Case for failing on an invalid cached connection
if (ex instanceof MetaException ||
// Case for a timed-out impersonated connection, and
diff --git a/drill-yarn/src/main/java/org/apache/drill/yarn/core/YarnRMClient.java b/drill-yarn/src/main/java/org/apache/drill/yarn/core/YarnRMClient.java
index 8905ce3..d388d5c 100644
--- a/drill-yarn/src/main/java/org/apache/drill/yarn/core/YarnRMClient.java
+++ b/drill-yarn/src/main/java/org/apache/drill/yarn/core/YarnRMClient.java
@@ -42,8 +42,8 @@
*/
public class YarnRMClient {
- private YarnConfiguration conf;
- private YarnClient yarnClient;
+ private final YarnConfiguration conf;
+ private final YarnClient yarnClient;
/**
* Application ID. Semantics are such that each session of Drill-on-YARN works
@@ -126,7 +126,7 @@
ApplicationReport appReport;
YarnApplicationState appState;
ApplicationAttemptId attemptId;
- for (;;) {
+ while (true) {
appReport = getAppReport();
appState = appReport.getYarnApplicationState();
attemptId = appReport.getCurrentApplicationAttemptId();
@@ -160,7 +160,7 @@
public void waitForCompletion() throws YarnClientException {
ApplicationReport appReport;
YarnApplicationState appState;
- for (;;) {
+ while (true) {
appReport = getAppReport();
appState = appReport.getYarnApplicationState();
if (appState == YarnApplicationState.FINISHED
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/config/StreamingAggregate.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/config/StreamingAggregate.java
index 91956e0..3d074bf 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/config/StreamingAggregate.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/config/StreamingAggregate.java
@@ -32,8 +32,6 @@
@JsonTypeName("streaming-aggregate")
public class StreamingAggregate extends AbstractSingle {
- static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(StreamingAggregate.class);
-
private final List<NamedExpression> keys;
private final List<NamedExpression> exprs;
@@ -68,5 +66,4 @@
public int getOperatorType() {
return CoreOperatorType.STREAMING_AGGREGATE_VALUE;
}
-
}
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggBatch.java
index 2f0c9e2..cc1494d 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggBatch.java
@@ -70,7 +70,6 @@
import org.apache.drill.exec.record.selection.SelectionVector4;
import org.apache.drill.exec.util.record.RecordBatchStats;
import org.apache.drill.exec.util.record.RecordBatchStats.RecordBatchIOType;
-import org.apache.drill.exec.vector.AllocationHelper;
import org.apache.drill.exec.vector.FixedWidthVector;
import org.apache.drill.exec.vector.ValueVector;
@@ -256,10 +255,7 @@
incomingSchema = incoming.getSchema();
createAggregator();
- for (VectorWrapper<?> w : container) {
- AllocationHelper.allocatePrecomputedChildCount(w.getValueVector(), 0, 0, 0);
- }
- container.setEmpty();
+ container.allocatePrecomputedChildCount(0, 0, 0);
if (incoming.getRecordCount() > 0) {
hashAggMemoryManager.update();
}
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
index 7886a5e..b1e332e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
@@ -219,7 +219,7 @@
if (first && getKeyExpressions().size() == 0) {
// if we have a straight aggregate and empty input batch, we need to handle it in a different way
- // Wewant to produce the special batch only if we got a NONE as the first outcome after
+ // We want to produce the special batch only if we got a NONE as the first outcome after
// OK_NEW_SCHEMA. If we get a NONE immediately after we see an EMIT, then we have already handled
// the case of the empty batch
constructSpecialBatch();
@@ -259,7 +259,7 @@
&& aggregator.previousBatchProcessed()) {
lastKnownOutcome = incoming.next();
if (!first ) {
- //Setup needs to be called again. During setup, generated code saves a reference to the vectors
+ // Setup needs to be called again. During setup, generated code saves a reference to the vectors
// pointed to by the incoming batch so that the de-referencing of the vector wrappers to get to
// the vectors does not have to be done at each call to eval. However, after an EMIT is seen,
// the vectors are replaced and the reference to the old vectors is no longer valid
@@ -290,7 +290,7 @@
ExternalSortBatch.releaseBatches(incoming);
return returnOutcome;
case RETURN_AND_RESET:
- //WE could have got a string of batches, all empty, until we hit an emit
+ // We could have got a string of batches, all empty, until we hit an emit
if (firstBatchForDataSet && getKeyExpressions().size() == 0 && recordCount == 0) {
// if we have a straight aggregate and empty input batch, we need to handle it in a different way
constructSpecialBatch();
@@ -371,10 +371,12 @@
}
/**
- * Method is invoked when we have a straight aggregate (no group by expression) and our input is empty.
- * In this case we construct an outgoing batch with record count as 1. For the nullable vectors we don't set anything
- * as we want the output to be NULL. For the required vectors (only for count()) we set the value to be zero since
- * we don't zero out our buffers initially while allocating them.
+ * Invoked when we have a straight aggregate (no group by expression) and our
+ * input is empty. In this case we construct an outgoing batch with record
+ * count as 1. For the nullable vectors we don't set anything as we want the
+ * output to be NULL. For the required vectors (only for count()) we set the
+ * value to be zero since we don't zero out our buffers initially while
+ * allocating them.
*/
private void constructSpecialBatch() {
int exprIndex = 0;
@@ -426,9 +428,15 @@
protected StreamingAggregator createAggregatorInternal() {
ClassGenerator<StreamingAggregator> cg = CodeGenerator.getRoot(StreamingAggTemplate.TEMPLATE_DEFINITION, context.getOptions());
- cg.getCodeGenerator().plainJavaCapable(true);
+ // Streaming agg no longer plain Java capable. Stats generates code
+ // that fails when compiled normally.
+ // cannot override resetValues() in org.apache.drill.exec.physical.impl.aggregate.StreamingAggTemplate
+ // public boolean resetValues()
+ // ^
+ // overridden method does not throw org.apache.drill.exec.exception.SchemaChangeException (compiler.err.override.meth.doesnt.throw)
+ // cg.getCodeGenerator().plainJavaCapable(true);
// Uncomment out this line to debug the generated code.
- //cg.getCodeGenerator().saveCodeForDebugging(true);
+ // cg.getCodeGenerator().saveCodeForDebugging(true);
container.clear();
LogicalExpression[] keyExprs = new LogicalExpression[getKeyExpressions().size()];
@@ -460,7 +468,7 @@
continue;
}
- /* Populate the complex writers for complex exprs */
+ // Populate the complex writers for complex exprs
if (expr instanceof DrillFuncHolderExpr &&
((DrillFuncHolderExpr) expr).getHolder().isComplexWriterFuncHolder()) {
// Need to process ComplexWriter function evaluation.
@@ -651,7 +659,8 @@
@Override
public void dump() {
- logger.error("StreamingAggBatch[container={}, popConfig={}, aggregator={}, incomingSchema={}]", container, popConfig, aggregator, incomingSchema);
+ logger.error("StreamingAggBatch[container={}, popConfig={}, aggregator={}, incomingSchema={}]",
+ container, popConfig, aggregator, incomingSchema);
}
@VisibleForTesting
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggTemplate.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggTemplate.java
index 4a6822d..c97e19e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggTemplate.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggTemplate.java
@@ -173,15 +173,15 @@
return AggOutcome.CLEANUP_AND_RETURN;
}
- outside: while(true) {
+ outside: while (true) {
// loop through existing records, adding as necessary.
- if(!processRemainingRecordsInBatch()) {
+ if (!processRemainingRecordsInBatch()) {
// output batch is full. Return.
return setOkAndReturn(outerOutcome);
}
// if the current batch came with an EMIT, we're done since if we are here it means output batch consumed all
// the rows in incoming batch
- if(outerOutcome == EMIT) {
+ if (outerOutcome == EMIT) {
// output the last record
outputToBatch(previousIndex);
resetIndex();
@@ -492,8 +492,7 @@
}
@Override
- public void cleanup() {
- }
+ public void cleanup() { }
@Override
public String toString() {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/metadata/MetadataControllerBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/metadata/MetadataControllerBatch.java
index 1bcb1ca..dce5822 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/metadata/MetadataControllerBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/metadata/MetadataControllerBatch.java
@@ -36,6 +36,7 @@
import org.apache.drill.exec.exception.OutOfMemoryException;
import org.apache.drill.exec.metastore.ColumnNamesOptions;
import org.apache.drill.exec.metastore.analyze.AnalyzeColumnUtils;
+import org.apache.drill.exec.metastore.analyze.MetadataControllerContext;
import org.apache.drill.exec.metastore.analyze.MetadataIdentifierUtils;
import org.apache.drill.exec.metastore.analyze.MetastoreAnalyzeConstants;
import org.apache.drill.exec.ops.FragmentContext;
@@ -105,18 +106,16 @@
public class MetadataControllerBatch extends AbstractBinaryRecordBatch<MetadataControllerPOP> {
private static final Logger logger = LoggerFactory.getLogger(MetadataControllerBatch.class);
+ enum State { RIGHT, LEFT, WRITE, FINISHED }
+
private final Tables tables;
private final TableInfo tableInfo;
private final Map<String, MetadataInfo> metadataToHandle;
- private final StatisticsRecordCollector statisticsCollector;
- private final List<TableMetadataUnit> metadataUnits;
+ private final StatisticsRecordCollector statisticsCollector = new StatisticsCollectorImpl();
+ private final List<TableMetadataUnit> metadataUnits = new ArrayList<>();
private final ColumnNamesOptions columnNamesOptions;
- private boolean firstLeft = true;
- private boolean firstRight = true;
- private boolean finished;
- private boolean finishedRight;
- private int recordCount;
+ private State state = State.RIGHT;
protected MetadataControllerBatch(MetadataControllerPOP popConfig,
FragmentContext context, RecordBatch left, RecordBatch right) throws OutOfMemoryException {
@@ -127,95 +126,59 @@
? null
: popConfig.getContext().metadataToHandle().stream()
.collect(Collectors.toMap(MetadataInfo::identifier, Function.identity()));
- this.metadataUnits = new ArrayList<>();
- this.statisticsCollector = new StatisticsCollectorImpl();
this.columnNamesOptions = new ColumnNamesOptions(context.getOptions());
}
- protected boolean setupNewSchema() {
- container.clear();
- container.addOrGet(MetastoreAnalyzeConstants.OK_FIELD_NAME, Types.required(TypeProtos.MinorType.BIT), null);
- container.addOrGet(MetastoreAnalyzeConstants.SUMMARY_FIELD_NAME, Types.required(TypeProtos.MinorType.VARCHAR), null);
- container.buildSchema(BatchSchema.SelectionVectorMode.NONE);
- container.setEmpty();
- return true;
- }
-
@Override
public IterOutcome innerNext() {
- IterOutcome outcome;
- boolean finishedLeft;
- if (finished) {
- return IterOutcome.NONE;
- }
+ while (state != State.FINISHED) {
+ switch (state) {
+ case RIGHT: {
- if (!finishedRight) {
- outcome = handleRightIncoming();
- if (outcome != null) {
- return outcome;
- }
- }
-
- outer:
- while (true) {
- outcome = next(0, left);
- switch (outcome) {
- case NONE:
- // all incoming data was processed when returned OK_NEW_SCHEMA
- finishedLeft = !firstLeft;
- break outer;
- case NOT_YET:
- return outcome;
- case OK_NEW_SCHEMA:
- if (firstLeft) {
- firstLeft = false;
- if (!setupNewSchema()) {
- outcome = IterOutcome.OK;
- }
- IterOutcome out = handleLeftIncoming();
- if (out != IterOutcome.OK) {
- return out;
- }
+ // Can only return NOT_YET
+ IterOutcome outcome = handleRightIncoming();
+ if (outcome != null) {
return outcome;
}
- //fall through
- case OK:
- assert !firstLeft : "First batch should be OK_NEW_SCHEMA";
- IterOutcome out = handleLeftIncoming();
- if (out != IterOutcome.OK) {
- return out;
+ break;
+ }
+ case LEFT: {
+
+ // Can only return NOT_YET
+ IterOutcome outcome = handleLeftIncoming();
+ if (outcome != null) {
+ return outcome;
}
break;
+ }
+ case WRITE:
+ writeToMetastore();
+ createSummary();
+ state = State.FINISHED;
+ return IterOutcome.OK_NEW_SCHEMA;
+
+ case FINISHED:
+ break;
+
default:
- throw new UnsupportedOperationException("Unsupported upstream state " + outcome);
+ throw new IllegalStateException(state.name());
}
}
-
- if (finishedLeft) {
- IterOutcome out = writeToMetastore();
- finished = true;
- return out;
- }
- return outcome;
+ return IterOutcome.NONE;
}
private IterOutcome handleRightIncoming() {
- IterOutcome outcome;
outer:
while (true) {
- outcome = next(0, right);
+ IterOutcome outcome = next(0, right);
switch (outcome) {
case NONE:
- // all incoming data was processed
- finishedRight = true;
+ state = State.LEFT;
break outer;
case NOT_YET:
return outcome;
case OK_NEW_SCHEMA:
- firstRight = false;
- //fall through
case OK:
- assert !firstRight : "First batch should be OK_NEW_SCHEMA";
appendStatistics(statisticsCollector);
break;
default:
@@ -226,14 +189,30 @@
}
private IterOutcome handleLeftIncoming() {
- metadataUnits.addAll(getMetadataUnits(left.getContainer()));
- return IterOutcome.OK;
+ while (true) {
+ IterOutcome outcome = next(0, left);
+ switch (outcome) {
+ case NONE:
+ // all incoming data was processed when returned OK_NEW_SCHEMA
+ state = State.WRITE;
+ return null;
+ case NOT_YET:
+ return outcome;
+ case OK_NEW_SCHEMA:
+ case OK:
+ metadataUnits.addAll(getMetadataUnits(left.getContainer()));
+ break;
+ default:
+ throw new UnsupportedOperationException("Unsupported upstream state " + outcome);
+ }
+ }
}
- private IterOutcome writeToMetastore() {
- FilterExpression deleteFilter = popConfig.getContext().tableInfo().toFilter();
+ private void writeToMetastore() {
+ MetadataControllerContext mdContext = popConfig.getContext();
+ FilterExpression deleteFilter = mdContext.tableInfo().toFilter();
- for (MetadataInfo metadataInfo : popConfig.getContext().metadataToRemove()) {
+ for (MetadataInfo metadataInfo : mdContext.metadataToRemove()) {
deleteFilter = FilterExpression.and(deleteFilter,
FilterExpression.equal(MetastoreColumn.METADATA_KEY, metadataInfo.key()));
}
@@ -246,8 +225,7 @@
.build());
}
- MetastoreTableInfo metastoreTableInfo = popConfig.getContext().metastoreTableInfo();
-
+ MetastoreTableInfo metastoreTableInfo = mdContext.metastoreTableInfo();
if (tables.basicRequests().hasMetastoreTableInfoChanged(metastoreTableInfo)) {
throw UserException.executionError(null)
.message("Metadata for table [%s] was changed before analyze is finished", tableInfo.name())
@@ -256,7 +234,10 @@
modify.overwrite(metadataUnits)
.execute();
+ }
+ private void createSummary() {
+ container.clear();
BitVector bitVector =
container.addOrGet(MetastoreAnalyzeConstants.OK_FIELD_NAME, Types.required(TypeProtos.MinorType.BIT), null);
VarCharVector varCharVector =
@@ -272,11 +253,8 @@
popConfig.getContext().tableInfo().workspace(),
popConfig.getContext().tableInfo().name()).getBytes());
- bitVector.getMutator().setValueCount(1);
- varCharVector.getMutator().setValueCount(1);
- container.setRecordCount(++recordCount);
-
- return IterOutcome.OK;
+ container.buildSchema(BatchSchema.SelectionVectorMode.NONE);
+ container.setValueCount(1);
}
private List<TableMetadataUnit> getMetadataUnits(VectorContainer container) {
@@ -696,7 +674,6 @@
default:
return objectReader.getObject();
}
-
}
private Set<Path> getIncomingLocations(TupleReader reader) {
@@ -748,6 +725,6 @@
@Override
public int getRecordCount() {
- return recordCount;
+ return container.getRecordCount();
}
}
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/scan/ScanOperatorExec.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/scan/ScanOperatorExec.java
index 5081b27..b6c77ca 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/scan/ScanOperatorExec.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/scan/ScanOperatorExec.java
@@ -246,7 +246,7 @@
}
private void nextAction(boolean readSchema) {
- for (;;) {
+ while (true) {
// If have a reader, read a batch
if (readerState != null) {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
index 42ea36c..915c1f4 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
@@ -396,7 +396,7 @@
// Loop over all input batches
IterOutcome result = OK;
- loop: for (;;) {
+ loop: while (true) {
result = loadBatch();
switch (result) {
case NONE:
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/SortImpl.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/SortImpl.java
index e037600..cc8f6bb 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/SortImpl.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/SortImpl.java
@@ -539,7 +539,7 @@
// a single last pass.
loop:
- for (;;) {
+ while (true) {
MergeTask task = memManager.consolidateBatches(
allocator.getAllocatedMemory(),
bufferedBatches.size(),
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/AggPrelBase.java b/exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/AggPrelBase.java
index 97c60f3..00ab539 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/AggPrelBase.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/AggPrelBase.java
@@ -48,35 +48,37 @@
public abstract class AggPrelBase extends DrillAggregateRelBase implements Prel {
public enum OperatorPhase {
- PHASE_1of1(false, false, false, "Single"),
- PHASE_1of2(true, true, false, "1st"),
- PHASE_2of2(true, false, true, "2nd");
- private boolean hasTwo;
- private boolean is1st;
- private boolean is2nd;
+ // Single phase aggregate
+ PHASE_1of1("Single"),
+
+ // Distributed aggregate: partitioned first phase
+ PHASE_1of2("1st"),
+
+ // Distibuted aggregate: non-partitioned overall aggregation
+ // phase
+ PHASE_2of2("2nd");
+
private String name;
- OperatorPhase(boolean hasTwo,
- boolean is1st,
- boolean is2nd,
- String name) {
- this.hasTwo = hasTwo;
- this.is1st = is1st;
- this.is2nd = is2nd;
+ OperatorPhase(String name) {
this.name = name;
}
public boolean hasTwo() {
- return hasTwo;
+ return this != PHASE_1of1;
}
public boolean is1st() {
- return is1st;
+ return this == PHASE_1of2;
}
public boolean is2nd() {
- return is2nd;
+ return this == PHASE_2of2;
+ }
+
+ public boolean isFinal() {
+ return this != PHASE_1of2;
}
public String getName() {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java
index 4ec0b8d..17d7b53 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java
@@ -30,6 +30,7 @@
import org.apache.drill.exec.record.BatchSchema.SelectionVectorMode;
import org.apache.drill.exec.record.selection.SelectionVector2;
import org.apache.drill.exec.record.selection.SelectionVector4;
+import org.apache.drill.exec.vector.AllocationHelper;
import org.apache.drill.exec.vector.SchemaChangeCallBack;
import org.apache.drill.exec.vector.ValueVector;
import org.apache.drill.shaded.guava.com.google.common.annotations.VisibleForTesting;
@@ -573,4 +574,13 @@
add(TypeHelper.getNewVector(field, allocator));
}
}
+
+ public void allocatePrecomputedChildCount(int valueCount,
+ int bytesPerValue, int childValCount) {
+ for (VectorWrapper<?> w : wrappers) {
+ AllocationHelper.allocatePrecomputedChildCount(w.getValueVector(),
+ valueCount, bytesPerValue, childValCount);
+ }
+ setEmpty();
+ }
}
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ArrayParser.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ArrayParser.java
index 963b8c5..d6f5912 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ArrayParser.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ArrayParser.java
@@ -54,7 +54,7 @@
@Override
public void parse(TokenIterator tokenizer) {
arrayListener.onStart();
- top: for (;;) {
+ top: while (true) {
// Position: [ (value, )* ^ ?
JsonToken token = tokenizer.requireNext();
switch (token) {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/DummyValueParser.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/DummyValueParser.java
index 7d5131b..d705f00 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/DummyValueParser.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/DummyValueParser.java
@@ -55,7 +55,7 @@
public void parseTail(TokenIterator tokenizer) {
// Parse (field: value)* }
- for (;;) {
+ while (true) {
JsonToken token = tokenizer.requireNext();
switch (token) {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonStructureParser.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonStructureParser.java
index 23ff3e1..4d46a46 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonStructureParser.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonStructureParser.java
@@ -240,7 +240,7 @@
// Only occurs for an empty document
return false;
}
- for (;;) {
+ while (true) {
try {
return rootState.parseRoot(tokenizer);
} catch (RecoverableJsonException e) {
@@ -264,8 +264,8 @@
private boolean recover() {
logger.warn("Attempting recovery from JSON syntax error. " + tokenizer.context());
boolean firstAttempt = true;
- for (;;) {
- for (;;) {
+ while (true) {
+ while (true) {
try {
if (parser.isClosed()) {
throw errorFactory().unrecoverableError();
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonValueParser.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonValueParser.java
index 15fc128..8819e2c 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonValueParser.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/JsonValueParser.java
@@ -74,7 +74,7 @@
// Accept value* ]
boolean first = true;
- for (;;) {
+ while (true) {
JsonToken token = tokenizer.requireNext();
if (token == JsonToken.END_ARRAY) {
json.append(tokenizer.textValue());
@@ -93,7 +93,7 @@
// Accept (field: value)* }
boolean first = true;
- for (;;) {
+ while (true) {
JsonToken token = tokenizer.requireNext();
if (token == JsonToken.END_OBJECT) {
json.append(tokenizer.textValue());
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ObjectParser.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ObjectParser.java
index 226cc29..ce331a3 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ObjectParser.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/ObjectParser.java
@@ -101,8 +101,7 @@
listener.onStart();
// Parse (field: value)* }
-
- top: for (;;) {
+ top: while (true) {
JsonToken token = tokenizer.requireNext();
// Position: { (key: value)* ? ^
switch (token) {
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/SimpleMessageParser.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/SimpleMessageParser.java
index a5181f1..b93f29e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/SimpleMessageParser.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/easy/json/parser/SimpleMessageParser.java
@@ -87,7 +87,7 @@
}
private boolean parseToElement(TokenIterator tokenizer, int level) throws MessageContextException {
- for (;;) {
+ while (true) {
JsonToken token = tokenizer.requireNext();
switch (token) {
case FIELD_NAME:
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/rm/DistributedQueryQueue.java b/exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/rm/DistributedQueryQueue.java
index 58d8416..7f2e060 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/rm/DistributedQueryQueue.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/rm/DistributedQueryQueue.java
@@ -77,7 +77,7 @@
* as the user changes system options. This value captures the value
* calculated at the time that this lease was granted.
*/
- private long queryMemory;
+ private final long queryMemory;
public DistributedQueueLease(QueryId queryId, String queueName,
DistributedLease lease, long queryMemory) {
@@ -197,9 +197,9 @@
}
private long memoryPerNode;
- private SystemOptionManager optionManager;
+ private final SystemOptionManager optionManager;
private ConfigSet configSet;
- private ClusterCoordinator clusterCoordinator;
+ private final ClusterCoordinator clusterCoordinator;
private long nextRefreshTime;
private long memoryPerSmallQuery;
private long memoryPerLargeQuery;
@@ -335,7 +335,7 @@
private void release(QueueLease lease) {
DistributedQueueLease theLease = (DistributedQueueLease) lease;
- for (;;) {
+ while (true) {
try {
theLease.lease.close();
theLease.lease = null;
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/resultSet/impl/TestResultSetCopier.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/resultSet/impl/TestResultSetCopier.java
index 646c3f4..13780de 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/resultSet/impl/TestResultSetCopier.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/resultSet/impl/TestResultSetCopier.java
@@ -412,7 +412,7 @@
// Equivalent of an entire operator run
int start = 1;
- for (;;) {
+ while (true) {
// Equivalent of operator next() method
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/rowSet/TestRowSet.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/rowSet/TestRowSet.java
index 975811e..da4705b 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/rowSet/TestRowSet.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/rowSet/TestRowSet.java
@@ -1220,7 +1220,7 @@
// away the last row because the row set abstraction does not
// implement vector overflow other than throwing an exception.
- for (;;) {
+ while (true) {
writer.scalar(0).setInt(count);
writer.scalar(1).setString(varCharValue);
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/server/rest/InteractiveUI.java b/exec/java-exec/src/test/java/org/apache/drill/exec/server/rest/InteractiveUI.java
index 1e2617b..5189db8 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/server/rest/InteractiveUI.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/server/rest/InteractiveUI.java
@@ -32,7 +32,7 @@
builder.configBuilder().put(ExecConstants.HTTP_ENABLE, true);
try {
startCluster(builder);
- for (;;) {
+ while (true) {
Thread.sleep(1000);
}
} catch (Exception e) {
diff --git a/exec/java-exec/src/test/java/org/apache/drill/test/ClientFixture.java b/exec/java-exec/src/test/java/org/apache/drill/test/ClientFixture.java
index bbf684e..442fd8e 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/test/ClientFixture.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/test/ClientFixture.java
@@ -94,7 +94,7 @@
}
}
- private ClusterFixture cluster;
+ private final ClusterFixture cluster;
private DrillClient client;
public ClientFixture(ClientBuilder builder) throws RpcException {
@@ -326,7 +326,7 @@
public String parseNext() throws IOException {
boolean eof = false;
StringBuilder buf = new StringBuilder();
- for (;;) {
+ while (true) {
int c = in.read();
if (c == -1) {
eof = true;
@@ -339,7 +339,7 @@
if (c == '"' || c == '\'' || c == '`') {
int quote = c;
boolean escape = false;
- for (;;) {
+ while (true) {
c = in.read();
if (c == -1) {
throw new IllegalArgumentException("Mismatched quote: " + (char) c);
@@ -363,7 +363,7 @@
public int exec(Reader in) throws IOException {
StatementParser parser = new StatementParser(in);
int count = 0;
- for (;;) {
+ while (true) {
String stmt = parser.parseNext();
if (stmt == null) {
logger.debug("----");
diff --git a/exec/java-exec/src/test/java/org/apache/drill/test/QueryBuilder.java b/exec/java-exec/src/test/java/org/apache/drill/test/QueryBuilder.java
index 6b0641d..4828f6c 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/test/QueryBuilder.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/test/QueryBuilder.java
@@ -709,8 +709,7 @@
int batchCount = 0;
QueryId queryId = null;
QueryState state;
- loop:
- for (;;) {
+ loop: while (true) {
QueryEvent event = listener.get();
switch (event.type)
{
diff --git a/exec/java-exec/src/test/java/org/apache/drill/test/QueryResultSet.java b/exec/java-exec/src/test/java/org/apache/drill/test/QueryResultSet.java
index f3c436d..3a3fe67 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/test/QueryResultSet.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/test/QueryResultSet.java
@@ -32,7 +32,7 @@
*/
public class QueryResultSet {
- private BufferingQueryEventListener listener;
+ private final BufferingQueryEventListener listener;
private boolean eof;
private int recordCount = 0;
private int batchCount = 0;
@@ -58,7 +58,7 @@
if (eof) {
return null;
}
- for (;;) {
+ while (true) {
QueryEvent event = listener.get();
switch (event.type)
{
diff --git a/exec/java-exec/src/test/java/org/apache/drill/test/QueryRowSetIterator.java b/exec/java-exec/src/test/java/org/apache/drill/test/QueryRowSetIterator.java
index c8d8459..acc5056 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/test/QueryRowSetIterator.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/test/QueryRowSetIterator.java
@@ -52,7 +52,7 @@
@Override
public boolean hasNext() {
- for (;;) {
+ while (true) {
QueryEvent event = listener.get();
state = event.state;
batch = null;
