apache/hadoop · error · IOException

Interrupted waiting for construction

Error message

Interrupted waiting for construction

What it means

Error "Interrupted waiting for construction" thrown in apache/hadoop.

Source

Thrown at hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java:75

   * @param expectedIndexOwner The expected owner of the index file
   * @return The Index Information
   * @throws IOException
   */
  public IndexRecord getIndexInformation(String mapId, int reduce,
                                         Path fileName, String expectedIndexOwner)
    throws IOException {

    IndexInformation info = cache.get(mapId);

    if (info == null) {
      info = readIndexFileToCache(fileName, mapId, expectedIndexOwner);
    } else {
      synchronized(info) {
        while (isUnderConstruction(info)) {
          try {
            info.wait();
          } catch (InterruptedException e) {
            throw new IOException("Interrupted waiting for construction", e);
          }
        }
      }
      LOG.debug("IndexCache HIT: MapId " + mapId + " found");
    }

    if (info.mapSpillRecord.size() == 0 ||
        info.mapSpillRecord.size() <= reduce) {
      throw new IOException("Invalid request " +
        " Map Id = " + mapId + " Reducer = " + reduce +
        " Index Info Length = " + info.mapSpillRecord.size());
    }
    return info.mapSpillRecord.getIndex(reduce);
  }

  private boolean isUnderConstruction(IndexInformation info) {
    synchronized(info) {
      return (null == info.mapSpillRecord);

View on GitHub (pinned to 2add963021)

Solutions

1. The thread was interrupted while building the index cache entry; this is typically part of task shutdown, so retry the task and ensure interrupts are not sent spuriously.

When it happens

Trigger: Thrown at hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IndexCache.java:75 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/c331703ad9f8f379. Report an issue: GitHub.