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[HUDI-2831] Securing usages of SimpleDateFormat to be thread-safe (#4073)

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This commit is contained in:
Alexey Kudinkin
2021-11-23 17:25:11 -08:00
committed by GitHub
parent fbff0799b9
commit 18cf59507f
3 changed files with 21 additions and 7 deletions
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9
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/compact/strategy/BoundedPartitionAwareCompactionStrategy.java
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@@ -39,14 +39,17 @@ import java.util.stream.Collectors;
*/
public class BoundedPartitionAwareCompactionStrategy extends DayBasedCompactionStrategy {
SimpleDateFormat dateFormat = new SimpleDateFormat(DayBasedCompactionStrategy.DATE_PARTITION_FORMAT);
// NOTE: {@code SimpleDataFormat} is NOT thread-safe
// TODO replace w/ DateTimeFormatter
private final ThreadLocal<SimpleDateFormat> dateFormat =
ThreadLocal.withInitial(() -> new SimpleDateFormat(DayBasedCompactionStrategy.DATE_PARTITION_FORMAT));
@Override
public List<HoodieCompactionOperation> orderAndFilter(HoodieWriteConfig writeConfig,
List<HoodieCompactionOperation> operations, List<HoodieCompactionPlan> pendingCompactionPlans) {
// The earliest partition to compact - current day minus the target partitions limit
String earliestPartitionPathToCompact =
dateFormat.format(getDateAtOffsetFromToday(-1 * writeConfig.getTargetPartitionsPerDayBasedCompaction()));
dateFormat.get().format(getDateAtOffsetFromToday(-1 * writeConfig.getTargetPartitionsPerDayBasedCompaction()));
// Filter out all partitions greater than earliestPartitionPathToCompact
return operations.stream().collect(Collectors.groupingBy(HoodieCompactionOperation::getPartitionPath)).entrySet()
@@ -59,7 +62,7 @@ public class BoundedPartitionAwareCompactionStrategy extends DayBasedCompactionS
public List<String> filterPartitionPaths(HoodieWriteConfig writeConfig, List<String> partitionPaths) {
// The earliest partition to compact - current day minus the target partitions limit
String earliestPartitionPathToCompact =
dateFormat.format(getDateAtOffsetFromToday(-1 * writeConfig.getTargetPartitionsPerDayBasedCompaction()));
dateFormat.get().format(getDateAtOffsetFromToday(-1 * writeConfig.getTargetPartitionsPerDayBasedCompaction()));
// Get all partitions and sort them
return partitionPaths.stream().map(partition -> partition.replace("/", "-"))
.sorted(Comparator.reverseOrder()).map(partitionPath -> partitionPath.replace("-", "/"))

10
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/compact/strategy/DayBasedCompactionStrategy.java
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@@ -41,12 +41,18 @@ public class DayBasedCompactionStrategy extends CompactionStrategy {
// For now, use SimpleDateFormat as default partition format
protected static final String DATE_PARTITION_FORMAT = "yyyy/MM/dd";
// Sorts compaction in LastInFirstCompacted order
// NOTE: {@code SimpleDataFormat} is NOT thread-safe
// TODO replace w/ DateTimeFormatter
private static final ThreadLocal<SimpleDateFormat> DATE_FORMAT =
ThreadLocal.withInitial(() -> new SimpleDateFormat(DATE_PARTITION_FORMAT, Locale.ENGLISH));
protected static Comparator<String> comparator = (String leftPartition, String rightPartition) -> {
try {
leftPartition = getPartitionPathWithoutPartitionKeys(leftPartition);
rightPartition = getPartitionPathWithoutPartitionKeys(rightPartition);
Date left = new SimpleDateFormat(DATE_PARTITION_FORMAT, Locale.ENGLISH).parse(leftPartition);
Date right = new SimpleDateFormat(DATE_PARTITION_FORMAT, Locale.ENGLISH).parse(rightPartition);
Date left = DATE_FORMAT.get().parse(leftPartition);
Date right = DATE_FORMAT.get().parse(rightPartition);
return left.after(right) ? -1 : right.after(left) ? 1 : 0;
} catch (ParseException e) {
throw new HoodieException("Invalid Partition Date Format", e);