/** Ensures orcReader is initialized for the split. */
private void ensureOrcReader() throws IOException {
if (orcReader != null) return;
Path path = HdfsUtils.getFileIdPath(fs, split.getPath(), fileId);
if (DebugUtils.isTraceOrcEnabled()) {
LOG.info("Creating reader for " + path + " (" + split.getPath() + ")");
}
long startTime = counters.startTimeCounter();
ReaderOptions opts = OrcFile.readerOptions(conf).filesystem(fs).fileMetadata(fileMetadata);
orcReader = EncodedOrcFile.createReader(path, opts);
counters.incrTimeCounter(Counter.HDFS_TIME_US, startTime);
}
