chia7712 commented on code in PR #15589:
URL: https://github.com/apache/kafka/pull/15589#discussion_r1536784932
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clients/src/main/java/org/apache/kafka/common/telemetry/internals/ClientTelemetryUtils.java:
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@@ -203,17 +201,13 @@ public static byte[] compress(byte[] raw, CompressionType
compressionType) throw
public static ByteBuffer decompress(byte[] metrics, CompressionType
compressionType) {
ByteBuffer data = ByteBuffer.wrap(metrics);
- try (InputStream in = compressionType.wrapForInput(data,
RecordBatch.CURRENT_MAGIC_VALUE, BufferSupplier.create());
- ByteArrayOutputStream out = new ByteArrayOutputStream()) {
-
+ try (InputStream in = compressionType.wrapForInput(data,
RecordBatch.CURRENT_MAGIC_VALUE, BufferSupplier.create())) {
byte[] bytes = new byte[data.capacity() * 2];
- int nRead;
- while ((nRead = in.read(bytes, 0, bytes.length)) != -1) {
+ int nRead = in.read(bytes, 0, bytes.length);
Review Comment:
we can't remove the while loop since the `InputStream#read` does NOT
guarantee to read ALL data at once. Please take a look at API spec:
https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html#read-byte:A-int-int-
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