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HBASE-14807 TestWALLockup is flakey

This commit is contained in:
stack 2015-11-13 22:39:25 -08:00
parent 7c3c9ac9c6
commit 1fa7b71cf8
1 changed files with 19 additions and 8 deletions
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27
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestWALLockup.java
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@ -20,7 +20,6 @@ package org.apache.hadoop.hbase.regionserver;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
@ -30,6 +29,7 @@ import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.CellScanner;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
@ -103,7 +103,7 @@ public class TestWALLockup {
* <p>First I need to set up some mocks for Server and RegionServerServices. I also need to
* set up a dodgy WAL that will throw an exception when we go to append to it.
*/
@Test (timeout=30000)
@Test (timeout=15000)
public void testLockupWhenSyncInMiddleOfZigZagSetup() throws IOException {
// A WAL that we can have throw exceptions when a flag is set.
class DodgyFSLog extends FSHLog {
@ -209,15 +209,21 @@ public class TestWALLockup {
put.addColumn(COLUMN_FAMILY_BYTES, Bytes.toBytes("1"), bytes);
WALKey key = new WALKey(region.getRegionInfo().getEncodedNameAsBytes(), htd.getTableName());
WALEdit edit = new WALEdit();
CellScanner CellScanner = put.cellScanner();
assertTrue(CellScanner.advance());
edit.add(CellScanner.current());
// Put something in memstore and out in the WAL. Do a big number of appends so we push
// out other side of the ringbuffer. If small numbers, stuff doesn't make it to WAL
for (int i = 0; i < 1000; i++) {
dodgyWAL.append(htd, region.getRegionInfo(), key, edit, true);
region.put(put);
}
// Set it so we start throwing exceptions.
LOG.info("SET throwing of exception on append");
dodgyWAL.throwException = true;
// This append provokes a WAL roll.
// This append provokes a WAL roll request
dodgyWAL.append(htd, region.getRegionInfo(), key, edit, true);
// Now wait until the dodgy WAL is latched.
while (dodgyWAL.latch.getCount() <= 0) Threads.sleep(1);
boolean exception = false;
try {
dodgyWAL.sync();
@ -229,20 +235,25 @@ public class TestWALLockup {
// Get a memstore flush going too so we have same hung profile as up in the issue over
// in HBASE-14317. Flush hangs trying to get sequenceid because the ringbuffer is held up
// by the zigzaglatch waiting on syncs to come home.
Thread t = new Thread ("flusher") {
Thread t = new Thread ("Flusher") {
public void run() {
try {
if (region.getMemstoreSize() <= 0) {
throw new IOException("memstore size=" + region.getMemstoreSize());
}
region.flush(false);
} catch (IOException e) {
// Can fail trying to flush in middle of a roll. Not a failure. Will succeed later
// when roll completes.
LOG.info("In flush", e);
fail();
}
LOG.info("Exiting");
};
};
t.setDaemon(true);
t.start();
// Wait till it gets into flushing. It will get stuck on getSequenceId. Then proceed.
while (!region.writestate.flushing) Threads.sleep(1);
// Wait until
while (dodgyWAL.latch.getCount() > 0) Threads.sleep(1);
// Now assert I got a new WAL file put in place even though loads of errors above.
assertTrue(originalWAL != dodgyWAL.getCurrentFileName());
// Can I append to it?