swamirishi commented on code in PR #4584:
URL: https://github.com/apache/ozone/pull/4584#discussion_r1191855710
##########
hadoop-hdds/rocks-native/src/main/java/org/apache/hadoop/hdds/utils/db/managed/ManagedSSTDumpIterator.java:
##########
@@ -86,51 +79,47 @@ public ManagedSSTDumpIterator(ManagedSSTDumpTool
sstDumpTool,
* @return Optional of the integer empty if no integer exists
*/
private Optional<Integer> getNextNumberInStream() throws IOException {
- StringBuilder value = new StringBuilder();
- int val;
- while ((val = processOutput.read()) != -1) {
- if (val >= '0' && val <= '9') {
- value.append((char) val);
- } else if (value.length() > 0) {
- break;
- }
+ int n = processOutput.read(intBuffer, 0, 4);
+ if (n == 4) {
+ return Optional.of(ByteBuffer.wrap(intBuffer).getInt());
}
- return value.length() > 0 ? Optional.of(Integer.valueOf(value.toString()))
- : Optional.empty();
+ return Optional.empty();
}
- /**
- * Reads the next n chars from the stream & makes a string.
- *
- * @param numberOfChars
- * @return String of next chars read
- * @throws IOException
- */
- private String readNextNumberOfCharsFromStream(int numberOfChars)
- throws IOException {
- StringBuilder value = new StringBuilder();
- while (numberOfChars > 0) {
- int noOfCharsRead = processOutput.read(charBuffer, 0,
- Math.min(numberOfChars, charBuffer.length));
- if (noOfCharsRead == -1) {
- break;
- }
- value.append(charBuffer, 0, noOfCharsRead);
- numberOfChars -= noOfCharsRead;
+ private Optional<byte[]> getNextByteArray() throws IOException {
+ Optional<Integer> size = getNextNumberInStream();
+ if (size.isPresent()) {
+ byte[] b = new byte[size.get()];
+ int n = processOutput.read(b);
+ return n != size.get() ? Optional.empty() : Optional.of(b);
}
+ return Optional.empty();
+ }
- return value.toString();
+ private Optional<UnsignedLong> getNextUnsignedLong() {
+ long val = 0;
+ for (int i = 0; i < 8; i++) {
+ val = val << 8;
+ int nextByte = processOutput.read();
+ if (nextByte < 0) {
+ return Optional.empty();
+ }
+ val += nextByte;
+ }
+ return Optional.of(UnsignedLong.fromLongBits(val));
}
private void init(ManagedSSTDumpTool sstDumpTool, File sstFile,
ManagedOptions options)
throws NativeLibraryNotLoadedException {
- String[] args = {"--file=" + sstFile.getAbsolutePath(), "--command=scan"};
+ String[] args = {"--file=" + sstFile.getAbsolutePath(), "--command=scan",
Review Comment:
done
##########
hadoop-hdds/rocks-native/src/main/java/org/apache/hadoop/hdds/utils/db/managed/ManagedSSTDumpIterator.java:
##########
@@ -180,33 +169,25 @@ public boolean hasNext() {
public T next() {
checkSanityOfProcess();
currentKey = nextKey;
- nextKey = null;
- boolean keyFound = false;
- while (!keyFound) {
- try {
- Optional<Integer> keyLength = getNextNumberInStream();
- if (!keyLength.isPresent()) {
- return getTransformedValue(currentKey);
- }
- String keyStr = readNextNumberOfCharsFromStream(keyLength.get());
- Matcher matcher = PATTERN_MATCHER.matcher(keyStr);
- if (keyStr.length() == keyLength.get() && matcher.find()) {
- Optional<Integer> valueLength = getNextNumberInStream();
- if (valueLength.isPresent()) {
- String valueStr = readNextNumberOfCharsFromStream(
- valueLength.get());
- if (valueStr.length() == valueLength.get()) {
- keyFound = true;
- nextKey = new KeyValue(matcher.group(PATTERN_KEY_GROUP_NUMBER),
- matcher.group(PATTERN_SEQ_GROUP_NUMBER),
- matcher.group(PATTERN_TYPE_GROUP_NUMBER),
- valueStr);
+ nextKey = Optional.empty();
+ try {
Review Comment:
done
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