closeBitrotWriters(writers)
		if err != nil {
			t.Fatalf("Test %d: failed to create random test data: %v", i, err)
		}

		readers := make([]io.ReaderAt, len(disks))
		for i, disk := range disks {
			shardFilesize := erasure.ShardFileSize(test.size)
			readers[i] = newBitrotReader(disk, nil, "testbucket", "testobject", shardFilesize, test.algorithm, bitrotWriterSum(writers[i]), erasure.ShardSize())
		}

        addDocument(indexName, client, num);

        ESSourceReader reader = new ESSourceReader(client, settings, indexName);
        reader.setScrollSize(1);
        reader.setLimitDocNumPercentage("1%");
        int count = 0;
        Set<String> valueSet = Collections.synchronizedSet(new HashSet<>());
        Map<String, Object> source;
        while ((source = reader.read()) != null) {

import java.io.IOException;
import java.io.Reader;
import java.util.Iterator;
import org.jspecify.annotations.Nullable;

/**
 * A {@link Reader} that concatenates multiple readers.
 *
 * @author Bin Zhu
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
final class MultiReader extends Reader {
  private final Iterator<? extends CharSource> it;
  private @Nullable Reader current;

// NewReaderSize returns a new [Reader] whose buffer has at least the specified
// size. If the argument io.Reader is already a [Reader] with large enough
// size, it returns the underlying [Reader].
func NewReaderSize(rd io.Reader, size int) *Reader {
	// Is it already a Reader?
	b, ok := rd.(*Reader)
	if ok && len(b.buf) >= size {
		return b
	}
	r := new(Reader)
	r.reset(make([]byte, max(size, minReadBufferSize)), rd)

	}
	testCases := []testCase{
		// Test - 1 - small bufio reader.
		{
			bufio.NewReaderSize(readers[0], 16),
			errLineTooLong,
			nil,
			nil,
		},
		// Test - 2 - unexpected end of the reader.
		{
			bufio.NewReader(readers[1]),
			io.ErrUnexpectedEOF,
			nil,
			nil,
		},
		// Test - 3 - line too long bigger than 4k+1
		{
			bufio.NewReader(readers[2]),
			errLineTooLong,
			nil,
			nil,
		},

	return found < notFound && found > 0
}

func danglingMetaErrsCount(cerrs []error) (notFoundCount int, nonActionableCount int) {
	for _, readErr := range cerrs {
		if readErr == nil {
			continue
		}
		switch {
		case errors.Is(readErr, errFileNotFound) || errors.Is(readErr, errFileVersionNotFound):
			notFoundCount++
		default:
			// All other errors are non-actionable
			nonActionableCount++
		}
	}

        final Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
        if (readers.hasNext()) {
            final ImageReader reader = readers.next();
            try {
                reader.setInput(input);
                final ImageReadParam param = reader.getDefaultReadParam();
                final int width = reader.getWidth(0);
                final int height = reader.getHeight(0);

// Index suggestions from existing Elasticsearch documents
DocumentReader reader = new ESSourceReader(
    client,
    suggester.settings(),
    "content-index",        // source index
    "document"             // document type
);

suggester.indexer()
    .indexFromDocument(reader, 2, 100)  // threads=2, batch=100
    .getResponse();
```

### Index from Query Logs

```java

	return *resp, nil
}

// where we keep old *Readers
var readMsgpReaderPool = bpool.Pool[*msgp.Reader]{New: func() *msgp.Reader { return &msgp.Reader{} }}

// mspNewReader returns a *Reader that reads from the provided reader.
// The reader will be buffered.
// Return with readMsgpReaderPoolPut when done.
func msgpNewReader(r io.Reader) *msgp.Reader {
	p := readMsgpReaderPool.Get()
	if p.R == nil {

...