How to use

createChunk

method

in

io.pravega.segmentstore.storage.rolling.RollingStorage

private void rollover(RollingSegmentHandle handle) throws StreamSegmentException {
  Preconditions.checkArgument(handle.getHeaderHandle() != null, "Cannot rollover a Segment with no header.");
  Preconditions.checkArgument(!handle.isReadOnly(), "Cannot rollover using a read-only handle.");
  Preconditions.checkArgument(!handle.isSealed(), "Cannot rollover a Sealed Segment.");
  log.debug("Rolling over '{}'.", handle);
  sealActiveChunk(handle);
  try {
    createChunk(handle);
  } catch (StreamSegmentExistsException ex) {
    // It may be possible that a concurrent rollover request using a different handle (either from this instance
    // or another) has already created the new chunk. Refresh the handle and try again. This is usually the case
    // with concurrent Storage instances trying to modify the same segment at the same time.
    int chunkCount = handle.chunks().size();
    handle.refresh(openHandle(handle.getSegmentName(), false));
    if (chunkCount == handle.chunks().size()) {
      // Nothing changed; re-throw the exception.
      throw ex;
    } else {
      // We've just refreshed the handle and picked up the latest chunk. Move on.
      log.warn("Aborted rollover due to concurrent rollover detected ('{}').", handle);
    }
  }
}