Package org.apache.iotdb.db.engine.memtable

Class AbstractMemTable

    • Field Detail

      • memTableIdCounter

        public static final java.util.concurrent.atomic.AtomicLong memTableIdCounter
        each memTable node has a unique int value identifier, init when recovering wal

      • disableMemControl

        protected boolean disableMemControl
        The initial value is true because we want calculate the text data size when recover memTable!!

    • Constructor Detail

      • AbstractMemTable

        public AbstractMemTable()

    • Method Detail

      • insert

        public void insert​(InsertRowPlan insertRowPlan)
        Description copied from interface: IMemTable
        insert into this memtable
        Specified by:
        insert in interface IMemTable
        Parameters:
        insertRowPlan - insertRowPlan

      • insertTablet

        public void insertTablet​(InsertTabletPlan insertTabletPlan,
                         int start,
                         int end)
                  throws WriteProcessException
        Description copied from interface: IMemTable
        insert tablet into this memtable. The rows to be inserted are in the range [start, end). Null value in each column values will be replaced by the subsequent non-null value, e.g., {1, null, 3, null, 5} will be {1, 3, 5, null, 5}
        Specified by:
        insertTablet in interface IMemTable
        Parameters:
        insertTabletPlan - insertTabletPlan
        start - included
        end - excluded
        Throws:
        WriteProcessException

      • write

        public void write​(IDeviceID deviceId,
                  java.util.List<org.apache.iotdb.tsfile.write.schema.IMeasurementSchema> schemaList,
                  long insertTime,
                  java.lang.Object[] objectValue)
        Specified by:
        write in interface IMemTable

      • writeAlignedRow

        public void writeAlignedRow​(IDeviceID deviceId,
                            java.util.List<org.apache.iotdb.tsfile.write.schema.IMeasurementSchema> schemaList,
                            long insertTime,
                            java.lang.Object[] objectValue)
        Specified by:
        writeAlignedRow in interface IMemTable

      • write

        public void write​(InsertTabletPlan insertTabletPlan,
                  int start,
                  int end)
        Description copied from interface: IMemTable
        write data in the range [start, end). Null value in each column values will be replaced by the subsequent non-null value, e.g., {1, null, 3, null, 5} will be {1, 3, 5, null, 5}
        Specified by:
        write in interface IMemTable

      • write

        public void write​(InsertTabletNode insertTabletNode,
                  int start,
                  int end)

      • writeAlignedTablet

        public void writeAlignedTablet​(InsertTabletNode insertTabletNode,
                               int start,
                               int end)

      • checkIfChunkDoesNotExist

        public boolean checkIfChunkDoesNotExist​(IDeviceID deviceId,
                                        java.lang.String measurement)
        Description copied from interface: IMemTable
        must guarantee the device exists in the work memtable only used when mem control enabled
        Specified by:
        checkIfChunkDoesNotExist in interface IMemTable

      • getCurrentTVListSize

        public long getCurrentTVListSize​(IDeviceID deviceId,
                                 java.lang.String measurement)
        Description copied from interface: IMemTable
        only used when mem control enabled
        Specified by:
        getCurrentTVListSize in interface IMemTable

      • size

        public long size()
        Specified by:
        size in interface IMemTable
        Returns:
        the number of points

      • memSize

        public long memSize()
        Specified by:
        memSize in interface IMemTable
        Returns:
        memory usage

      • reachTotalPointNumThreshold

        public boolean reachTotalPointNumThreshold()
        Description copied from interface: IMemTable
        only used when mem control enabled
        Specified by:
        reachTotalPointNumThreshold in interface IMemTable
        Returns:
        whether the average number of points in each WritableChunk reaches the threshold

      • clear

        public void clear()
        Description copied from interface: IMemTable
        putBack all the memory resources.
        Specified by:
        clear in interface IMemTable

      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface IMemTable

      • delete

        public void delete​(org.apache.iotdb.commons.path.PartialPath originalPath,
                   org.apache.iotdb.commons.path.PartialPath devicePath,
                   long startTimestamp,
                   long endTimestamp)
        Description copied from interface: IMemTable
        Delete data in it whose timestamp <= 'timestamp' and belonging to timeseries path. Only called for non-flushing MemTable.
        Specified by:
        delete in interface IMemTable
        Parameters:
        originalPath - the PartialPath the timeseries to be deleted.
        devicePath - the device path of the timeseries to be deleted.
        startTimestamp - the lower-bound of deletion time.
        endTimestamp - the upper-bound of deletion time

      • addTVListRamCost

        public void addTVListRamCost​(long cost)
        Description copied from interface: IMemTable
        only used when mem control enabled
        Specified by:
        addTVListRamCost in interface IMemTable

      • releaseTVListRamCost

        public void releaseTVListRamCost​(long cost)
        Description copied from interface: IMemTable
        only used when mem control enabled
        Specified by:
        releaseTVListRamCost in interface IMemTable

      • getTVListsRamCost

        public long getTVListsRamCost()
        Description copied from interface: IMemTable
        only used when mem control enabled
        Specified by:
        getTVListsRamCost in interface IMemTable

      • addTextDataSize

        public void addTextDataSize​(long textDataSize)
        Description copied from interface: IMemTable
        only used when mem control enabled
        Specified by:
        addTextDataSize in interface IMemTable

      • releaseTextDataSize

        public void releaseTextDataSize​(long textDataSize)
        Description copied from interface: IMemTable
        only used when mem control enabled
        Specified by:
        releaseTextDataSize in interface IMemTable

      • release

        public void release()
        Description copied from interface: IMemTable
        release resource of this memtable
        Specified by:
        release in interface IMemTable

      • serializedSize

        public int serializedSize()
        Notice: this method is concurrent unsafe
        Specified by:
        serializedSize in interface SerializedSize
        Returns:
        bytes number

      • deserialize

        public void deserialize​(java.io.DataInputStream stream)
                 throws java.io.IOException
        Throws:
        java.io.IOException