apache/hadoop · error · IOException

<directive> found without <pool>

Error message

<directive> found without <pool>

What it means

Error "<directive> found without <pool>" thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/OfflineImageReconstructor.java:1185

          CacheDirectiveInfoProto.newBuilder();
      Long id = directive.removeChildLong(SECTION_ID);
      if (id == null) {
        throw new IOException("<directive> found without <id>");
      }
      bld.setId(id);
      String path = directive.removeChildStr(SECTION_PATH);
      if (path == null) {
        throw new IOException("<directive> found without <path>");
      }
      bld.setPath(path);
      Integer replication = directive.removeChildInt(SECTION_REPLICATION);
      if (replication == null) {
        throw new IOException("<directive> found without <replication>");
      }
      bld.setReplication(replication);
      String pool = directive.removeChildStr(CACHE_MANAGER_SECTION_POOL);
      if (path == null) {
        throw new IOException("<directive> found without <pool>");
      }
      bld.setPool(pool);
      Node expiration =
          directive.removeChild(CACHE_MANAGER_SECTION_EXPIRATION);
      if (expiration != null) {
        CacheDirectiveInfoExpirationProto.Builder ebld =
            CacheDirectiveInfoExpirationProto.newBuilder();
        Long millis =
            expiration.removeChildLong(CACHE_MANAGER_SECTION_MILLIS);
        if (millis == null) {
          throw new IOException("cache directive <expiration> found " +
              "without <millis>");
        }
        ebld.setMillis(millis);
        if (expiration.removeChildBool(CACHE_MANAGER_SECTION_RELATIVE)) {
          ebld.setIsRelative(true);
        } else {
          ebld.setIsRelative(false);

View on GitHub (pinned to 2add963021)

Solutions

1. Add the missing <pool> element to the <directive> stanza in the fsimage XML.
2. Regenerate the fsimage XML with 'hdfs oiv' from a valid fsimage.

When it happens

Trigger: Thrown by oiv -r when a <directive> stanza lacks the mandatory <pool> element.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/89f4909bed6f2605. Report an issue: GitHub.