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Use StringCachedPool in TsFileResource to reduce the memory size #3523

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Merged
SteveYurongSu merged 1 commit into from
Jul 7, 2021
Merged

Use StringCachedPool in TsFileResource to reduce the memory size #3523

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1 change: 1 addition & 0 deletions server/src/main/java/org/apache/iotdb/db/engine/storagegroup/timeindex/DeviceTimeIndex.java
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Original file line number Diff line number Diff line change
Expand Up @@ -90,6 +90,7 @@ public void serialize(OutputStream outputStream) throws IOException {

for (Entry<String, Integer> stringIntegerEntry : deviceToIndex.entrySet()) {
String deviceName = stringIntegerEntry.getKey();
deviceName = cachedDevicePool.computeIfAbsent(deviceName, k -> k);
int index = stringIntegerEntry.getValue();
ReadWriteIOUtils.write(deviceName, outputStream);
ReadWriteIOUtils.write(index, outputStream);
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1 change: 1 addition & 0 deletions server/src/main/java/org/apache/iotdb/db/engine/storagegroup/timeindex/FileTimeIndex.java
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Expand Up @@ -67,6 +67,7 @@ public FileTimeIndex(Set<String> devices, long startTime, long endTime) {
public void serialize(OutputStream outputStream) throws IOException {
ReadWriteIOUtils.write(devices.size(), outputStream);
for (String device : devices) {
device = cachedDevicePool.computeIfAbsent(device, k -> k);
ReadWriteIOUtils.write(device, outputStream);
}
ReadWriteIOUtils.write(startTime, outputStream);
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