### 3. Example

As an example, let us take a gzip compressed CSV file. Without S3 Select, we would need to download, decompress and process the entire CSV to get the data you needed. With Select API, can use a simple SQL expression to return only the data from the CSV you’re interested in, instead of retrieving the entire object. Following Python example shows how to retrieve the first column `Location` from an object containing data in CSV format.

Read more on how to use these endpoints in [MinIO healthcheck guide](https://github.com/minio/minio/blob/master/docs/metrics/healthcheck/README.md).

## Prometheus Probe

      }
    assertFailsWith<IOException> {
      body.bytes()
    }.also { expected ->
      assertThat(expected.message).isEqualTo(
        "Cannot buffer entire body for content length: 2147483648",
      )
    }
  }

  @Test
  fun byteStringEmpty() {
    val body = body("")
    assertThat(body.byteString()).isEqualTo(ByteString.EMPTY)
  }

  @Test

    /**
     * Performs MAC signing of the SMB. This is done as follows.
     * The signature field of the SMB is overwritten with the sequence number;
     * The MD5 digest of the MAC signing key + the entire SMB is taken;
     * The first 8 bytes of this are placed in the signature field.
     *
     * @param data
     *            The data.
     * @param offset

// systems.
//
// One benefit of using DirectIO on Linux is that the page cache will not be
// polluted with single-access data. The ZFS read cache (ARC) is scan-resistant
// so there is no risk of polluting the entire cache with data accessed once.
// Another goal of DirectIO is to minimize the mutation of data by the kernel
// before issuing IO to underlying devices. ZFS users often enable features like

    assertThat(buffer.isProbablyUtf8(100L)).isTrue()
    assertThat(buffer.readUtf8()).isEqualTo("hello ".repeat(1024))
  }

  /** Confirm [isProbablyUtf8] doesn't attempt to read the entire stream. */
  @Test fun doesNotReadEntireSource() {
    val unlimitedSource =
      object : Source {
        override fun read(
          sink: Buffer,
          byteCount: Long,
        ): Long {

import static com.google.common.truth.Truth.assertWithMessage;

import com.google.common.testing.AbstractPackageSanityTests;
import org.jspecify.annotations.NullUnmarked;

/**
 * Covers basic sanity checks for the entire package.
 *
 * @author Kurt Alfred Kluever
 */

@NullUnmarked
public class PackageSanityTests extends AbstractPackageSanityTests {

  private static final AbstractGraphBuilder<?> graphBuilderA =

        BROWSER_COMPATIBLE_DATE_FORMATS[i] = format
      }
      position.index = 0
      result = format.parse(this, position)
      if (position.index != 0) {
        // Something was parsed. It's possible the entire string was not consumed but we ignore
        // that. If any of the BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS ended in "'GMT'" we'd have
        // to also check that position.getIndex() == value.length() otherwise parsing might have

            System.arraycopy(buffer, bufferIndex, txn_buf, bufDataStart + dataDisplacement, dataCount);
            bufferIndex += dataCount;
        }

        /* Check to see if the entire transaction has been
         * read. If so call the read methods.
         */

        if (!parametersDone && parameterDisplacement + parameterCount == totalParameterCount) {
            parametersDone = true;

# expose the tags directly. However, the protocol does expose
# the hashes of all the branch heads, so we can use a hash of
# all those branch names and heads as a conservative snapshot
# of the entire remote repo state, and use that as the tag sum.
# Any change on the server then invalidates the tag sum,
# even if it didn't have anything to do with tags, but at least
# we will avoid re-cloning a server when there have been no