Examples with MergeTableRegionsProcedure org.apache.hadoop.hbase.master.assignment.MergeTableRegionsProcedure used on opensource projects

Example 1 with MergeTableRegionsProcedure

use of org.apache.hadoop.hbase.master.assignment.MergeTableRegionsProcedure in project hbase by apache.

the class TestMergeTableRegionsWhileRSCrash method test.

@Test
public void test() throws Exception {
    // write some rows to the table
    for (int i = 0; i < 10; i++) {
        byte[] row = Bytes.toBytes("row" + i);
        Put put = new Put(row);
        put.addColumn(CF, CF, CF);
        TABLE.put(put);
    }
    MasterProcedureEnv env = UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor().getEnvironment();
    final ProcedureExecutor<MasterProcedureEnv> executor = UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor();
    List<RegionInfo> regionInfos = admin.getRegions(TABLE_NAME);
    MergeTableRegionsProcedure mergeTableRegionsProcedure = new MergeTableRegionsProcedure(env, new RegionInfo[] { regionInfos.get(0), regionInfos.get(1) }, false);
    executor.submitProcedure(mergeTableRegionsProcedure);
    UTIL.waitFor(30000, () -> executor.getProcedures().stream().filter(p -> p instanceof TransitRegionStateProcedure).map(p -> (TransitRegionStateProcedure) p).anyMatch(p -> TABLE_NAME.equals(p.getTableName())));
    UTIL.getMiniHBaseCluster().killRegionServer(UTIL.getMiniHBaseCluster().getRegionServer(0).getServerName());
    UTIL.getMiniHBaseCluster().startRegionServer();
    UTIL.waitUntilNoRegionsInTransition();
    Scan scan = new Scan();
    ResultScanner results = TABLE.getScanner(scan);
    int count = 0;
    Result result = null;
    while ((result = results.next()) != null) {
        count++;
    }
    Assert.assertEquals("There should be 10 rows!", 10, count);
}

Example 2 with MergeTableRegionsProcedure

use of org.apache.hadoop.hbase.master.assignment.MergeTableRegionsProcedure in project hbase by apache.

the class HMaster method mergeRegions.

@Override
public long mergeRegions(final RegionInfo[] regionsToMerge, final boolean forcible, final long ng, final long nonce) throws IOException {
    checkInitialized();
    if (!isSplitOrMergeEnabled(MasterSwitchType.MERGE)) {
        String regionsStr = Arrays.deepToString(regionsToMerge);
        LOG.warn("Merge switch is off! skip merge of " + regionsStr);
        throw new DoNotRetryIOException("Merge of " + regionsStr + " failed because merge switch is off");
    }
    final String mergeRegionsStr = Arrays.stream(regionsToMerge).map(RegionInfo::getEncodedName).collect(Collectors.joining(", "));
    return MasterProcedureUtil.submitProcedure(new NonceProcedureRunnable(this, ng, nonce) {

        @Override
        protected void run() throws IOException {
            getMaster().getMasterCoprocessorHost().preMergeRegions(regionsToMerge);
            String aid = getClientIdAuditPrefix();
            LOG.info("{} merge regions {}", aid, mergeRegionsStr);
            submitProcedure(new MergeTableRegionsProcedure(procedureExecutor.getEnvironment(), regionsToMerge, forcible));
            getMaster().getMasterCoprocessorHost().postMergeRegions(regionsToMerge);
        }

        @Override
        protected String getDescription() {
            return "MergeTableProcedure";
        }
    });
}