When want to read a file which are created by a test unit, access is denied

Genius-pig · September 15, 2019, 8:42am

Here is the link.
https://travis-ci.org/apache/incubator-iotdb/builds/585136801
It only failed in windows platform, there was some error information, but I don’t know why.

[ERROR] Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 0.014 s <<< FAILURE! - in org.apache.iotdb.tsfile.read.TsFileSequenceReaderTest
[ERROR] testReadTsFileSequently(org.apache.iotdb.tsfile.read.TsFileSequenceReaderTest)  Time elapsed: 0.014 s  <<< ERROR!
java.io.FileNotFoundException: target\testTsFile.tsfile (Access is denied)
	at org.apache.iotdb.tsfile.read.TsFileSequenceReaderTest.before(TsFileSequenceReaderTest.java:54)
[ERROR] testReadTsFileSequently(org.apache.iotdb.tsfile.read.TsFileSequenceReaderTest)  Time elapsed: 0.014 s  <<< ERROR!
java.lang.NullPointerException
	at org.apache.iotdb.tsfile.read.TsFileSequenceReaderTest.after(TsFileSequenceReaderTest.java:61)

It seems like that I don’t the permissions of a file.

BanzaiMan · September 16, 2019, 1:26am

I don’t know enough about your code to really know what exactly is going on, but from my past experiences with dealing with Windows inform me that there are a few things that commonly cause problems:

Path separator. On Linux and macOS, it is /, but on Windows, it’s \.
Newline characters. On Linux and macOS, it is \n, but on Windows it’s \r\n.

In many cases these differences could be masked by tools and libraries you use, but in other cases you are responsible for accounting for differences.

A quick search in your code for this failure (testTsFile) leads me to

github.com

apache/incubator-iotdb/blob/17e9647e077603ab092d7871c409804e26810c5b/tsfile/src/test/java/org/apache/iotdb/tsfile/utils/TsFileGeneratorForTest.java#L54


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


@Ignore
public class TsFileGeneratorForTest {


  public static final long START_TIMESTAMP = 1480562618000L;
  private static final Logger LOG = LoggerFactory.getLogger(TsFileGeneratorForTest.class);
  public static TsFileWriter innerWriter;
  public static String inputDataFile;
  public static String outputDataFile = "target/testTsFile.tsfile";
  public static String errorOutputDataFile;
  private static int rowCount;
  private static int chunkGroupSize;
  private static int pageSize;


  public static void generateFile(int rowCount, int chunkGroupSize, int pageSize)
      throws IOException, InterruptedException, WriteProcessException {
    generateFile(rowCount, rowCount, chunkGroupSize, pageSize);
  }

which seems fishy. I suggest starting from there.

If not, I suggest getting a hold of a Windows box and debug.

Good luck.

Genius-pig · September 16, 2019, 8:19am

I test it in windows with almost same environment. All tests have already passed. Is it a admin privilege problem？

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When want to read a file which are created by a test unit, access is denied

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