diff --git a/dev-support/hbase-personality.sh b/dev-support/hbase-personality.sh
index 58d2aa8266d1..be305c54431e 100755
--- a/dev-support/hbase-personality.sh
+++ b/dev-support/hbase-personality.sh
@@ -82,7 +82,7 @@ function personality_globals
   # Yetus 0.7.0 enforces limits. Default proclimit is 1000.
   # Up it. See HBASE-19902 for how we arrived at this number.
   #shellcheck disable=SC2034
-  PROCLIMIT=10000
+  PROCLIMIT=12500
 
   # Set docker container to run with 20g. Default is 4g in yetus.
   # See HBASE-19902 for how we arrived at 20g.
diff --git a/hbase-common/src/test/java/org/apache/hadoop/hbase/TestPrintEnv.java b/hbase-common/src/test/java/org/apache/hadoop/hbase/TestPrintEnv.java
new file mode 100644
index 000000000000..ddf3766f9426
--- /dev/null
+++ b/hbase-common/src/test/java/org/apache/hadoop/hbase/TestPrintEnv.java
@@ -0,0 +1,165 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase;
+
+import com.sun.management.UnixOperatingSystemMXBean;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.lang.management.ManagementFactory;
+import org.apache.hadoop.hbase.testclassification.SmallTests;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+@Category(SmallTests.class)
+public class TestPrintEnv {
+  @ClassRule
+  public static final HBaseClassTestRule CLASS_RULE =
+      HBaseClassTestRule.forClass(TestPrintEnv.class);
+  private static Object S = new Object();
+  private static int COUNT = 0;
+
+  @Test
+  public void testupu() throws Exception {
+    Process p = Runtime.getRuntime().exec(new String [] {"/bin/bash", "-c", "ulimit -u"});
+    int errCode = p.waitFor();
+    System.out.println("errCode=" + errCode);
+    BufferedReader is = new BufferedReader(new InputStreamReader(p.getInputStream()));
+    String line;
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    is.close();
+    is = new BufferedReader(new InputStreamReader(p.getErrorStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    p = Runtime.getRuntime().exec(new String [] {"/bin/bash", "-c", "ulimit -u 10001"});
+    errCode = p.waitFor();
+    System.out.println("errCode=" + errCode);
+    is = new BufferedReader(new InputStreamReader(p.getInputStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    is.close();
+    is = new BufferedReader(new InputStreamReader(p.getErrorStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    p = Runtime.getRuntime().exec(new String [] {"/bin/bash", "-c", "ulimit -u"});
+    errCode = p.waitFor();
+    System.out.println("errCode=" + errCode);
+    is = new BufferedReader(new InputStreamReader(p.getInputStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    is.close();
+    is = new BufferedReader(new InputStreamReader(p.getErrorStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+  }
+
+  @Test
+  public void testmvnversion() throws Exception {
+    Process p = Runtime.getRuntime().exec(new String [] {"/bin/bash", "-c", "mvn --version"});
+    int errCode = p.waitFor();
+    System.out.println("errCode=" + errCode);
+    BufferedReader is = new BufferedReader(new InputStreamReader(p.getInputStream()));
+    String line;
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    is.close();
+    is = new BufferedReader(new InputStreamReader(p.getErrorStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+  }
+
+  @Test
+  public void testn() throws Exception {
+    Process p = Runtime.getRuntime().exec(new String [] {"/bin/bash", "-c", "ulimit -n"});
+    int errCode = p.waitFor();
+    System.out.println("errCode=" + errCode);
+    BufferedReader is = new BufferedReader(new InputStreamReader(p.getInputStream()));
+    String line;
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    is.close();
+    is = new BufferedReader(new InputStreamReader(p.getErrorStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+  }
+
+  @Test
+  public void testa() throws Exception {
+    Process p = Runtime.getRuntime().exec(new String [] {"/bin/bash", "-c", "ulimit -a"});
+    int errCode = p.waitFor();
+    System.out.println("errCode=" + errCode);
+    BufferedReader is = new BufferedReader(new InputStreamReader(p.getInputStream()));
+    String line;
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+    is.close();
+    is = new BufferedReader(new InputStreamReader(p.getErrorStream()));
+    while ((line = is.readLine()) != null) {
+      System.out.println(line);
+    }
+  }
+
+  @Test
+  public void testfds() throws InterruptedException, IOException {
+    final UnixOperatingSystemMXBean osMBean =
+      (UnixOperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
+    System.out.println("opendfs: " + osMBean.getOpenFileDescriptorCount());
+    System.out.println("maxfds:  " + osMBean.getMaxFileDescriptorCount());
+  }
+
+/*  
+  @org.junit.Ignore @Test
+  public void testthreds() throws InterruptedException, IOException {
+    try {
+      Runtime rt = Runtime.getRuntime();
+      while (true) {
+        new Thread(new Runnable() {
+          public void run() {
+            synchronized (S) {
+              COUNT += 1;
+              System.err.println("New thread #" + COUNT);
+            }
+            for (; ; ) {
+              try {
+                Thread.sleep(10);
+              } catch (Exception e) {
+                System.err.println(e);
+              }
+            }
+          }
+        }).start();
+        Thread.sleep(10);
+      }
+    } catch (Throwable t) {
+    }
+  }
+  */
+}