horizonzy commented on code in PR #15063:
URL: https://github.com/apache/pulsar/pull/15063#discussion_r868883170
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tiered-storage/jcloud/src/main/java/org/apache/bookkeeper/mledger/offload/jcloud/impl/BlockAwareSegmentInputStreamImpl.java:
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@@ -161,6 +212,45 @@ private List<ByteBuf> readNextEntriesFromLedger(long
start, long maxNumberEntrie
}
}
+ @Override
+ public int read(byte[] b, int off, int len) throws IOException {
+ if (b == null) {
+ throw new NullPointerException("The given bytes are null");
+ } else if (off < 0 || len < 0 || len > b.length - off) {
+ throw new IndexOutOfBoundsException("off=" + off + ", len=" + len
+ ", b.length=" + b.length);
+ } else 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 -= read;
+ readBytes += read;
+ bytesReadOffset += read;
+ }
+ if (readLen == 0) {
+ return readBytes;
+ }
+
+ // reading ledger entries
+ if (bytesReadOffset < blockSize) {
Review Comment:
And shall we need this logicment, if blockSize < headerSize at initial. When
read header stream, the bytesReadOffset will be greater than blockSize. It
won't to read entry data.
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