### **3.1 Configure Hadoop**

Navigate to **Services** -> **HDFS** -> **CONFIGS** -> **ADVANCED** as shown below

![hdfs-configs](https://github.com/minio/minio/blob/master/docs/bigdata/images/image2.png?raw=true "hdfs advanced configs")

Navigate to **Custom core-site** to configure MinIO parameters for `_s3a_` connector

![s3a-config](https://github.com/minio/minio/blob/master/docs/bigdata/images/image5.png?raw=true "custom core-site")

			}
			if errors.Is(err, errConfigNotFound) {
				// legacy file config not found, proceed to look for new metadata.
				continue
			}

			return nil, err
		}
		configs[legacyFile] = configData
		b.Created = info.ModTime
	}

	return configs, nil
}

func (b *BucketMetadata) convertLegacyConfigs(ctx context.Context, objectAPI ObjectLayer, configs map[string][]byte) error {

# Sourcing this enables Bazel remote cache (read and write)
# Note that "_push" cache configs write to GCS buckets and require
# authentication. If you are not a Googler, source "public_cache" to enable the
# public read-only cache.
# The cache configs are different for MacOS and Linux
if [[ $(uname -s) == "Darwin" ]]; then
  TFCI_BAZEL_COMMON_ARGS="$TFCI_BAZEL_COMMON_ARGS --config tf_public_macos_cache_push"
else

import common.OpenJdk21
import common.OpenJdk25
import common.OpenJdk8
import common.Os
import common.VersionedSettingsBranch
import common.cleanupRule
import common.javaHome
import jetbrains.buildServer.configs.kotlin.Project

class PromotionProject(
    branch: VersionedSettingsBranch,
) : Project({
        id("Promotion")
        name = "Promotion"

        cleanupRule(historyDays = 14, artifactsDays = 7)

	roleArnMap := make(map[string]string)
	// Map of configs to a map of users to their access keys
	cfgToUsersMap := make(map[string]map[string]madmin.OpenIDUserAccessKeys)
	configs, err := globalIAMSys.OpenIDConfig.GetConfigList(s)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}
	for _, config := range configs {
		if !allConfigs && cfgName != config.Name {
			continue
		}

Sebastián Ramírez <******@****.***> 1766749018 -0800

    void testWriteBytesWireFormatVariousConfigurations() {
        // Test with different buffer sizes and indices
        int[][] configs = { { 100, 0 }, { 1024, 50 }, { 4096, 2000 }, { 65536, 32768 } };

        for (int[] config : configs) {
            byte[] dst = new byte[config[0]];
            int dstIndex = config[1];

            int result = response.writeBytesWireFormat(dst, dstIndex);

		// timestamp of last successful refresh
		config.lastRefreshedAt = UTCNow()
		return nil
	default:
		return err
	}

	// Reset drivercache built using current config
	clear(config.drivercache)
	// Remove existing tier configs
	clear(config.Tiers)
	// Copy over the new tier configs
	maps.Copy(config.Tiers, newConfig.Tiers)
	config.lastRefreshedAt = UTCNow()
	return nil
}

# Sourcing this enables Bazel remote cache (public, read-only)
# The cache configs are different for MacOS and Linux
if [[ $(uname -s) == "Darwin" ]]; then
  TFCI_BAZEL_COMMON_ARGS="$TFCI_BAZEL_COMMON_ARGS --config tf_public_macos_cache"
else
  TFCI_BAZEL_COMMON_ARGS="$TFCI_BAZEL_COMMON_ARGS --config tf_public_cache"

│   └── job/                   # Background jobs
├── api/                       # REST API endpoints
├── opensearch/                # OpenSearch integration
│   ├── config/                # Config index (crawl configs, schedules)
│   ├── log/                   # Log index
│   ├── user/                  # User index
│   ├── exbhv/                 # Extended behaviors (repositories)