protected void waitRegionInTransition(final List<HRegionInfo> regions)
throws IOException, CoordinatedStateException {
AssignmentManager am = this.masterServices.getAssignmentManager();
RegionStates states = am.getRegionStates();
long waitTime = server.getConfiguration().getLong("hbase.master.wait.on.region", 5 * 60 * 1000);
for (HRegionInfo region : regions) {
long done = System.currentTimeMillis() + waitTime;
while (System.currentTimeMillis() < done) {
if (states.isRegionInState(region, State.FAILED_OPEN)) {
am.regionOffline(region);
}
if (!states.isRegionInTransition(region)) break;
try {
Thread.sleep(waitingTimeForEvents);
} catch (InterruptedException e) {
LOG.warn("Interrupted while sleeping");
throw (InterruptedIOException) new InterruptedIOException().initCause(e);
}
LOG.debug(
"Waiting on region to clear regions in transition; "
+ am.getRegionStates().getRegionTransitionState(region));
}
if (states.isRegionInTransition(region)) {
throw new IOException(
"Waited hbase.master.wait.on.region ("
+ waitTime
+ "ms) for region to leave region "
+ region.getRegionNameAsString()
+ " in transitions");
}
}
}
@Test
public void testWholesomeMerge() throws Exception {
LOG.info("Starting testWholesomeMerge");
final TableName tableName = TableName.valueOf("testWholesomeMerge");
// Create table and load data.
Table table = createTableAndLoadData(master, tableName);
// Merge 1st and 2nd region
mergeRegionsAndVerifyRegionNum(master, tableName, 0, 1, INITIAL_REGION_NUM - 1);
// Merge 2nd and 3th region
PairOfSameType<HRegionInfo> mergedRegions =
mergeRegionsAndVerifyRegionNum(master, tableName, 1, 2, INITIAL_REGION_NUM - 2);
verifyRowCount(table, ROWSIZE);
// Randomly choose one of the two merged regions
HRegionInfo hri =
RandomUtils.nextBoolean() ? mergedRegions.getFirst() : mergedRegions.getSecond();
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
AssignmentManager am = cluster.getMaster().getAssignmentManager();
RegionStates regionStates = am.getRegionStates();
long start = EnvironmentEdgeManager.currentTime();
while (!regionStates.isRegionInState(hri, State.MERGED)) {
assertFalse(
"Timed out in waiting one merged region to be in state MERGED",
EnvironmentEdgeManager.currentTime() - start > 60000);
Thread.sleep(500);
}
// We should not be able to assign it again
am.assign(hri, true);
assertFalse("Merged region can't be assigned", regionStates.isRegionInTransition(hri));
assertTrue(regionStates.isRegionInState(hri, State.MERGED));
// We should not be able to unassign it either
am.unassign(hri, null);
assertFalse("Merged region can't be unassigned", regionStates.isRegionInTransition(hri));
assertTrue(regionStates.isRegionInState(hri, State.MERGED));
table.close();
}