zymap commented on code in PR #15063:
URL: https://github.com/apache/pulsar/pull/15063#discussion_r847853847
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tiered-storage/jcloud/src/main/java/org/apache/bookkeeper/mledger/offload/jcloud/impl/BlockAwareSegmentInputStreamImpl.java:
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@@ -143,6 +191,41 @@ private int readEntries() throws IOException {
}
}
+ @Override
+ public int read(byte[] b, int off, int len) throws IOException {
+ if (len == 0) {
+ return 0;
+ }
+
+ int offset = off;
+ int readLen = len;
+ int readBytes = 0;
+ // reading header
+ if (dataBlockHeaderStream.available() > 0) {
+ int read = dataBlockHeaderStream.read(b, off, len);
+ offset += read;
+ readLen -= readLen;
+ readBytes += read;
+ bytesReadOffset += read;
+ }
+ if (readLen == 0) {
+ return readBytes;
+ }
+
+ // reading ledger entries
+ if (bytesReadOffset < blockSize) {
+ byte[] readEntries = readEntries(readLen);
+ for (int i = 0; i < readEntries.length; i++) {
+ b[offset + i] = readEntries[i];
+ readBytes++;
+ }
+ return readBytes;
+ }
+
+ // reached end
+ return -1;
Review Comment:
Yes. Here has a test:
https://github.com/apache/pulsar/pull/15063/files#diff-1f2edfe47e5f4f0d8b1634a21eeaccf78eb36d05c55d1c02f20f146247926defR681
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