Package org.apache.accumulo.server.master.state

Examples of org.apache.accumulo.server.master.state.MergeStats.nextMergeState()

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    ColumnFQ.put(m, Constants.METADATA_OLD_PREV_ROW_COLUMN, KeyExtent.encodePrevEndRow(new Text("o")));
    update(connector, m);
   
    // do the state check
    MergeStats stats = scan(state, metaDataStateStore);
    MergeState newState = stats.nextMergeState(connector, state);
    Assert.assertEquals(MergeState.WAITING_FOR_OFFLINE, newState);
   
    // unassign the tablets
    BatchDeleter deleter = connector.createBatchDeleter("!METADATA", Constants.NO_AUTHS, 1000, 1000l, 1000l, 1);
    deleter.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
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    deleter.setRanges(Collections.singletonList(new Range()));
    deleter.delete();
   
    // now we should be ready to merge but, we have an inconsistent !METADATA table
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_OFFLINE, stats.nextMergeState(connector, state));
   
    // finish the split
    KeyExtent tablet = new KeyExtent(tableId, new Text("p"), new Text("o"));
    m = tablet.getPrevRowUpdateMutation();
    ColumnFQ.put(m, Constants.METADATA_SPLIT_RATIO_COLUMN, new Value("0.5".getBytes()));
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    update(connector, m);
    metaDataStateStore.setLocations(Collections.singletonList(new Assignment(tablet, state.someTServer)));
   
    // onos... there's a new tablet online
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_CHOPPED, stats.nextMergeState(connector, state));
   
    // chop it
    m = tablet.getPrevRowUpdateMutation();
    ColumnFQ.put(m, Constants.METADATA_CHOPPED_COLUMN, new Value("junk".getBytes()));
    update(connector, m);
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    m = tablet.getPrevRowUpdateMutation();
    ColumnFQ.put(m, Constants.METADATA_CHOPPED_COLUMN, new Value("junk".getBytes()));
    update(connector, m);

    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_OFFLINE, stats.nextMergeState(connector, state));

    // take it offline
    m = tablet.getPrevRowUpdateMutation();
    Collection<Collection<String>> walogs = Collections.emptyList();
    metaDataStateStore.unassign(Collections.singletonList(new TabletLocationState(tablet, null, state.someTServer, null, walogs, false)));
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    Collection<Collection<String>> walogs = Collections.emptyList();
    metaDataStateStore.unassign(Collections.singletonList(new TabletLocationState(tablet, null, state.someTServer, null, walogs, false)));
   
    // now we can split
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.MERGING, stats.nextMergeState(connector, state));

  }

  /**
   * @param state
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    ColumnFQ.put(m, Constants.METADATA_OLD_PREV_ROW_COLUMN, KeyExtent.encodePrevEndRow(new Text("o")));
    update(connector, m);
   
    // do the state check
    MergeStats stats = scan(state, metaDataStateStore);
    MergeState newState = stats.nextMergeState(connector, state);
    Assert.assertEquals(MergeState.WAITING_FOR_OFFLINE, newState);
   
    // unassign the tablets
    BatchDeleter deleter = connector.createBatchDeleter("!METADATA", Constants.NO_AUTHS, 1000, 1000l, 1000l, 1);
    deleter.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
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    deleter.setRanges(Collections.singletonList(new Range()));
    deleter.delete();
   
    // now we should be ready to merge but, we have an inconsistent !METADATA table
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_OFFLINE, stats.nextMergeState(connector, state));
   
    // finish the split
    KeyExtent tablet = new KeyExtent(tableId, new Text("p"), new Text("o"));
    m = tablet.getPrevRowUpdateMutation();
    ColumnFQ.put(m, Constants.METADATA_SPLIT_RATIO_COLUMN, new Value("0.5".getBytes()));
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    update(connector, m);
    metaDataStateStore.setLocations(Collections.singletonList(new Assignment(tablet, state.someTServer)));
   
    // onos... there's a new tablet online
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_CHOPPED, stats.nextMergeState(connector, state));
   
    // chop it
    m = tablet.getPrevRowUpdateMutation();
    ColumnFQ.put(m, Constants.METADATA_CHOPPED_COLUMN, new Value("junk".getBytes()));
    update(connector, m);
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    m = tablet.getPrevRowUpdateMutation();
    ColumnFQ.put(m, Constants.METADATA_CHOPPED_COLUMN, new Value("junk".getBytes()));
    update(connector, m);

    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_OFFLINE, stats.nextMergeState(connector, state));

    // take it offline
    m = tablet.getPrevRowUpdateMutation();
    Collection<Collection<String>> walogs = Collections.emptyList();
    metaDataStateStore.unassign(Collections.singletonList(new TabletLocationState(tablet, null, state.someTServer, null, walogs, false)));
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    Collection<Collection<String>> walogs = Collections.emptyList();
    metaDataStateStore.unassign(Collections.singletonList(new TabletLocationState(tablet, null, state.someTServer, null, walogs, false)));
   
    // now we can split
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.MERGING, stats.nextMergeState(connector, state));

  }

  /**
   * @param state
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