fe/src/test/java/org/apache/impala/customcluster/CustomClusterRunner.java

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package org.apache.impala.customcluster;

import java.io.IOException;

/**
 * Runs an Impala cluster with custom flags.
 *
 * In order to prevent this from affecting other tests, we filter on the package name to
 * run FE custom cluster tests when we run the python custom cluster tests, so this should
 * not be used outside of this package.
 */
class CustomClusterRunner {
  public static int StartImpalaCluster() throws IOException, InterruptedException {
    return StartImpalaCluster("");
  }

  /**
   * Starts Impala and passes 'args' to the impalads, catalogd, and statestored.
   */
  public static int StartImpalaCluster(String args)
      throws IOException, InterruptedException {
    Process p = Runtime.getRuntime().exec(new String[] {"start-impala-cluster.py",
        "--impalad_args", args, "--catalogd_args", args, "--state_store_args", args});
    p.waitFor();
    return p.exitValue();
  }
}