Examples with UnknownRegionException org.apache.hadoop.hbase.UnknownRegionException used on opensource projects

Example 16 with UnknownRegionException

use of org.apache.hadoop.hbase.UnknownRegionException in project hbase by apache.

the class MasterRpcServices method mergeTableRegions.

@Override
public MergeTableRegionsResponse mergeTableRegions(RpcController c, MergeTableRegionsRequest request) throws ServiceException {
    try {
        server.checkInitialized();
    } catch (IOException ioe) {
        throw new ServiceException(ioe);
    }
    RegionStates regionStates = server.getAssignmentManager().getRegionStates();
    RegionInfo[] regionsToMerge = new RegionInfo[request.getRegionCount()];
    for (int i = 0; i < request.getRegionCount(); i++) {
        final byte[] encodedNameOfRegion = request.getRegion(i).getValue().toByteArray();
        if (request.getRegion(i).getType() != RegionSpecifierType.ENCODED_REGION_NAME) {
            LOG.warn("MergeRegions specifier type: expected: " + RegionSpecifierType.ENCODED_REGION_NAME + " actual: region " + i + " =" + request.getRegion(i).getType());
        }
        RegionState regionState = regionStates.getRegionState(Bytes.toString(encodedNameOfRegion));
        if (regionState == null) {
            throw new ServiceException(new UnknownRegionException(Bytes.toStringBinary(encodedNameOfRegion)));
        }
        regionsToMerge[i] = regionState.getRegion();
    }
    try {
        long procId = server.mergeRegions(regionsToMerge, request.getForcible(), request.getNonceGroup(), request.getNonce());
        return MergeTableRegionsResponse.newBuilder().setProcId(procId).build();
    } catch (IOException ioe) {
        throw new ServiceException(ioe);
    }
}

Example 17 with UnknownRegionException

use of org.apache.hadoop.hbase.UnknownRegionException in project hbase by apache.

the class RawAsyncHBaseAdmin method getRegionLocation.

/**
 * Get the region location for the passed region name. The region name may be a full region name
 * or encoded region name. If the region does not found, then it'll throw an
 * UnknownRegionException wrapped by a {@link CompletableFuture}
 * @param regionNameOrEncodedRegionName region name or encoded region name
 * @return region location, wrapped by a {@link CompletableFuture}
 */
CompletableFuture<HRegionLocation> getRegionLocation(byte[] regionNameOrEncodedRegionName) {
    if (regionNameOrEncodedRegionName == null) {
        return failedFuture(new IllegalArgumentException("Passed region name can't be null"));
    }
    CompletableFuture<Optional<HRegionLocation>> future;
    if (RegionInfo.isEncodedRegionName(regionNameOrEncodedRegionName)) {
        String encodedName = Bytes.toString(regionNameOrEncodedRegionName);
        if (encodedName.length() < RegionInfo.MD5_HEX_LENGTH) {
            // old format encodedName, should be meta region
            future = connection.registry.getMetaRegionLocations().thenApply(locs -> Stream.of(locs.getRegionLocations()).filter(loc -> loc.getRegion().getEncodedName().equals(encodedName)).findFirst());
        } else {
            future = ClientMetaTableAccessor.getRegionLocationWithEncodedName(metaTable, regionNameOrEncodedRegionName);
        }
    } else {
        // Not all regionNameOrEncodedRegionName here is going to be a valid region name,
        // it needs to throw out IllegalArgumentException in case tableName is passed in.
        RegionInfo regionInfo;
        try {
            regionInfo = CatalogFamilyFormat.parseRegionInfoFromRegionName(regionNameOrEncodedRegionName);
        } catch (IOException ioe) {
            return failedFuture(new IllegalArgumentException(ioe.getMessage()));
        }
        if (regionInfo.isMetaRegion()) {
            future = connection.registry.getMetaRegionLocations().thenApply(locs -> Stream.of(locs.getRegionLocations()).filter(loc -> loc.getRegion().getReplicaId() == regionInfo.getReplicaId()).findFirst());
        } else {
            future = ClientMetaTableAccessor.getRegionLocation(metaTable, regionNameOrEncodedRegionName);
        }
    }
    CompletableFuture<HRegionLocation> returnedFuture = new CompletableFuture<>();
    addListener(future, (location, err) -> {
        if (err != null) {
            returnedFuture.completeExceptionally(err);
            return;
        }
        if (!location.isPresent() || location.get().getRegion() == null) {
            returnedFuture.completeExceptionally(new UnknownRegionException("Invalid region name or encoded region name: " + Bytes.toStringBinary(regionNameOrEncodedRegionName)));
        } else {
            returnedFuture.complete(location.get());
        }
    });
    return returnedFuture;
}

Example 18 with UnknownRegionException

use of org.apache.hadoop.hbase.UnknownRegionException in project hbase by apache.

the class TestRegionMergeTransactionOnCluster method testMerge.

/**
 * This test tests 1, merging region not online;
 * 2, merging same two regions; 3, merging unknown regions.
 * They are in one test case so that we don't have to create
 * many tables, and these tests are simple.
 */
@Test
public void testMerge() throws Exception {
    LOG.info("Starting " + name.getMethodName());
    final TableName tableName = TableName.valueOf(name.getMethodName());
    final Admin admin = TEST_UTIL.getAdmin();
    try {
        // Create table and load data.
        Table table = createTableAndLoadData(MASTER, tableName);
        AssignmentManager am = MASTER.getAssignmentManager();
        List<RegionInfo> regions = am.getRegionStates().getRegionsOfTable(tableName);
        // Fake offline one region
        RegionInfo a = regions.get(0);
        RegionInfo b = regions.get(1);
        am.unassign(b);
        am.offlineRegion(b);
        try {
            // Merge offline region. Region a is offline here
            FutureUtils.get(admin.mergeRegionsAsync(a.getEncodedNameAsBytes(), b.getEncodedNameAsBytes(), false));
            fail("Offline regions should not be able to merge");
        } catch (DoNotRetryRegionException ie) {
            System.out.println(ie);
            assertTrue(ie instanceof MergeRegionException);
        }
        try {
            // Merge the same region: b and b.
            FutureUtils.get(admin.mergeRegionsAsync(b.getEncodedNameAsBytes(), b.getEncodedNameAsBytes(), true));
            fail("A region should not be able to merge with itself, even forcfully");
        } catch (IOException ie) {
            assertTrue("Exception should mention regions not online", StringUtils.stringifyException(ie).contains("region to itself") && ie instanceof MergeRegionException);
        }
        try {
            // Merge unknown regions
            FutureUtils.get(admin.mergeRegionsAsync(Bytes.toBytes("-f1"), Bytes.toBytes("-f2"), true));
            fail("Unknown region could not be merged");
        } catch (IOException ie) {
            assertTrue("UnknownRegionException should be thrown", ie instanceof UnknownRegionException);
        }
        table.close();
    } finally {
        TEST_UTIL.deleteTable(tableName);
    }
}