@SuppressWarnings("deprecation")
@Override
public void commitRow(byte[] row, long startId, long commitId, boolean isDelete, Integer lockId)
throws IOException {
Get get = new Get(row);
get.setMaxVersions();
get.addFamily(DominoConst.INNER_FAMILY);
Result r = region.get(get, lockId);
if (!containsStatus(r, startId)) {
// Other transaction may have committed this row of this version
LOG.info(
"Commit: No status found, returning: {}.{}", new String(this.getName()), new String(row));
return;
}
List<KeyValue> versions = r.getColumn(DominoConst.INNER_FAMILY, DominoConst.VERSION_COL);
Put commit = new Put(row);
commit.setWriteToWAL(true);
boolean isFresh = true;
if (versions.size() >= DominoConst.MAX_VERSION) {
// We need to clean the earliest version.
LOG.info(
"Commit: rolling version window: {}.{}", new String(this.getName()), new String(row));
isFresh = addClearColumns(commit, versions, r, row, isDelete, commitId, startId, lockId);
}
KeyValue clearStatusKV =
new KeyValue(
row, DominoConst.INNER_FAMILY, DominoConst.STATUS_COL, startId, KeyValue.Type.Delete);
commit.add(clearStatusKV);
byte[] value = DominoConst.versionValue(startId, isDelete);
if (isFresh) {
KeyValue commitKV =
new KeyValue(row, DominoConst.INNER_FAMILY, DominoConst.VERSION_COL, commitId, value);
commit.add(commitKV);
}
// commitNumericModifications(row, startId, lockId, commit);
mutateRow(commit, lockId);
}
/**
* Clear the data out of version window & write them to the second lowest version.
*
* @param commit
* @param versions
* @param r
* @param row
* @param isDelete
* @param commitId
* @param startId
* @param lockId
* @return
* @throws IOException
*/
@SuppressWarnings("deprecation")
private boolean addClearColumns(
Put commit,
List<KeyValue> versions,
Result r,
byte[] row,
boolean isDelete,
long commitId,
long startId,
Integer lockId)
throws IOException {
KeyValue commitKV =
new KeyValue(
row,
DominoConst.INNER_FAMILY,
DominoConst.VERSION_COL,
commitId,
DominoConst.versionValue(startId, isDelete));
NavigableSet<KeyValue> orderedVersions = new TreeSet<KeyValue>(MVCC.VERSION_KV_COMPARATOR);
orderedVersions.add(versions.get(versions.size() - 1));
if (versions.size() >= 2) {
orderedVersions.add(versions.get(versions.size() - 2));
}
orderedVersions.add(commitKV);
Iterator<KeyValue> it = orderedVersions.descendingIterator();
KeyValue remove = it.next();
KeyValue prev = it.next();
byte[] removeValue = remove.getValue();
byte[] prevValue = prev.getValue();
long removeCommitId = remove.getTimestamp();
long removeStartId = DominoConst.getVersion(removeValue);
long prevStartId = DominoConst.getVersion(prevValue);
boolean isFresh = (removeCommitId != commitId);
Columns removeCols = new Columns(DominoConst.getColumnsAt(r, removeStartId));
if (!DominoConst.isDeleteVersion(removeValue) && !DominoConst.isDeleteVersion(prevValue)) {
Columns prevCols = new Columns(DominoConst.getColumnsAt(r, prevStartId));
Get get = new Get(row);
get.setTimeStamp(removeStartId);
Result res = region.get(get, lockId);
for (Column col : removeCols.cols) {
if (prevCols.contains(col.family, col.qualifier)) {
continue; // a newer value
}
// merge it
byte[] value = res.getValue(col.family, col.qualifier);
prevCols.add(col.family, col.qualifier);
commit.add(col.family, col.qualifier, prevStartId, value);
}
commit.add(
DominoConst.INNER_FAMILY, DominoConst.COLUMNS_COL, prevStartId, prevCols.toByteArray());
}
if (isFresh) {
commit.add(
new KeyValue(
row,
DominoConst.INNER_FAMILY,
DominoConst.VERSION_COL,
removeCommitId,
KeyValue.Type.Delete));
}
commit.add(
new KeyValue(
row,
DominoConst.INNER_FAMILY,
DominoConst.COLUMNS_COL,
removeStartId,
KeyValue.Type.Delete));
for (Column col : removeCols.cols) {
commit.add(new KeyValue(row, col.family, col.qualifier, removeStartId, KeyValue.Type.Delete));
}
return isFresh;
}
public static void main(String args) throws IOException {
HTableInterface mtable = new HTable(new Configuration(), TRANSACTION_META);
byte[] row = DominoConst.long2TranscationRowKey(100);
mtable.coprocessorProxy(TMetaIface.class, row).getTransactionStatus(100);
System.out.println("hehehe");
}