cpp/src/common/tsfile_common.h (6 lines):
	- line 53: // TODO review the String.len_ used
	- line 189: int32_t serialized_size_;  // TODO seems no usage
	- line 190: char chunk_type_;          // TODO give a description here
	- line 216: // TODO check parameter valid
	- line 357: void reset()  // FIXME reuse
	- line 886: // TODO use vector to support binary search


cpp/src/common/container/slice.h (6 lines):
	- line 47: data_ = (char *)malloc(len + 1);  // TODO: user ourself's mem_alloc()
	- line 59: data_ = (char *)malloc(len + 1);  // TODO: user ourself's mem_alloc()
	- line 68: free(data_);  // TODO: user ourself's mem_free()
	- line 78: data_ = (char *)malloc(len + 1);  // TODO: user ourself's mem_alloc()
	- line 87: free(data_);  // TODO: user ourself's mem_free()
	- line 92: (char *)malloc(len + 1);  // TODO: user ourself's mem_alloc()


cpp/src/file/tsfile_io_writer.cc (5 lines):
	- line 315: // TODO better memory management.
	- line 325: // TODO: better memory manage for this while-loop, cur_index_node_queue
	- line 350: ts_index.reset();  // TODO reuse
	- line 575: // TODO currently, we do not have multi chunks of same timeseries in
	- line 855: * TODO:


cpp/src/common/container/sorted_array.h (4 lines):
	- line 37: #define SORTED_ARRAY_INIT_CAPACITY 1000   // TODO: configurable mode
	- line 38: #define SORTED_ARRAY_GROWTH_THRESHOLD 50  // TODO: configurable mode
	- line 39: #define SORTED_ARRAY_SHRINK_THRESHOLD 50  // TODO: configurable mode
	- line 159: sizeof(*(array_)));  // TODO: user ourself's mem_alloc()


cpp/src/common/allocator/byte_stream.h (4 lines):
	- line 231: // TODO define a WrappedByteStream class
	- line 270: // TODO use a specific construct function to mark it as wrapped use.
	- line 930: // TODO more test on var_xxx
	- line 1006: // TODO 8byte to 4byte.


cpp/src/common/container/array.h (3 lines):
	- line 34: #define ARRAY_INIT_CAPACITY 1000   // TODO: configurable mode
	- line 35: #define ARRAY_GROWTH_THRESHOLD 50  // TODO: configurable mode
	- line 36: #define ARRAY_SHRINK_THRESHOLD 50  // TODO: configurable mode


cpp/src/file/tsfile_io_reader.cc (3 lines):
	- line 132: const int32_t TSFILE_READ_IO_SIZE = 1024; // TODO make it configurable
	- line 537: cur_timeseries_index_pa.init(512, MOD_TSFILE_READER); // TODO 512
	- line 742: // TODO add a result cache for load_timeseries_index


java/tsfile/src/main/java/org/apache/tsfile/write/chunk/AlignedChunkGroupWriterImpl.java (3 lines):
	- line 219: // TODO: should we allow duplicated measurements in a Tablet?
	- line 233: // TODO: changing to a column-first style by calculating the remaining page space of each
	- line 290: // TODO: we can write the null columns after whole insertion, according to the point number


cpp/src/reader/scan_iterator.cc (3 lines):
	- line 57: // TODO default config of time_cd
	- line 65: // TODO @tsblock
	- line 136: // FIXME do not append all tvlist data into tsblock in one time.


cpp/src/reader/tsfile_series_scan_iterator.cc (2 lines):
	- line 41: // TODO @filter
	- line 141: // TODO config


cpp/src/common/tsfile_common.cc (2 lines):
	- line 94: // FIXME empty list
	- line 335: // TODO currently, we do sequence search.


cpp/src/common/record.h (2 lines):
	- line 32: // TODO: use std::move
	- line 35: // TODO use common/allocator/my_string.h


cpp/src/utils/db_utils.h (2 lines):
	- line 207: // TODO rename to DatabaseIdTTL
	- line 359: // TODO remove


cpp/src/reader/bloom_filter.cc (1 line):
	- line 108: // TODO byte-wise unittest


cpp/VersionUpdater.groovy (1 line):
	- line 39: // TODO: When releasing, we might need to manually add this file to the release preparation commit.


java/tsfile/src/main/java/org/apache/tsfile/encoding/encoder/FloatSprintzEncoder.java (1 line):
	- line 79: else pred = 2 * pred - 1; // TODO:overflow


cpp/src/file/open_file.h (1 line):
	- line 114: *ts_time_range_map_;  // TODO: use custom hashtable to monitor memory.


java/tsfile/src/main/java/org/apache/tsfile/encoding/encoder/LongSprintzEncoder.java (1 line):
	- line 78: pred = 2 * pred - 1; // TODO:overflow


cpp/src/file/write_file.cc (1 line):
	- line 67: // TODO make sure no same file exists


java/tsfile/src/main/java/org/apache/tsfile/file/metadata/StringArrayDeviceID.java (1 line):
	- line 75: // TODO: change to Object[] and rename to just ArrayDeviceID


java/tsfile/src/main/java/org/apache/tsfile/encoding/decoder/IntZigzagDecoder.java (1 line):
	- line 69: // TODO maybe this.byteCache = buffer is faster, but not safe


cpp/src/common/seq_tvlist.inc (1 line):
	- line 53: // TODO make it configurable


cpp/src/encoding/bitpack_encoder.h (1 line):
	- line 109: // TODO: put the bytes on the stack instead on the heap


cpp/src/utils/util_define.h (1 line):
	- line 80: // TODO only define this when DEBUG


cpp/src/reader/device_meta_iterator.cc (1 line):
	- line 72: if (id_filter_ != nullptr /*TODO: !id_filter_->satisfy(device_id)*/) {


java/tsfile/src/main/java/org/apache/tsfile/file/metadata/ChunkMetadata.java (1 line):
	- line 429: // TODO: replaces fields in this class with MeasurementSchema


cpp/src/common/tsblock/tsblock.cc (1 line):
	- line 291: // TODO use memcpy in vector instead of using iter/appender


cpp/src/cwrapper/tsfile_cwrapper.cc (1 line):
	- line 425: //     // TODO: Implement get table schema with tsfile reader.


cpp/src/common/allocator/mem_alloc.cc (1 line):
	- line 250: // TODO return to SQL


cpp/src/file/tsfile_io_reader.h (1 line):
	- line 36: * TODO:


cpp/src/encoding/ts2diff_encoder.h (1 line):
	- line 138: // FIXME bits_left_ != 0 does not means something to be flushed. (=8)


java/tsfile/src/main/java/org/apache/tsfile/encoding/encoder/IntSprintzEncoder.java (1 line):
	- line 77: pred = 2 * pred - 1; // TODO:overflow


java/tsfile/src/main/java/org/apache/tsfile/read/common/type/RowType.java (1 line):
	- line 102: // TODO: names are already canonicalized, so they should be printed as delimited identifiers


java/tsfile/src/main/java/org/apache/tsfile/encoding/encoder/DoubleSprintzEncoder.java (1 line):
	- line 82: pred = 2 * pred - 1; // TODO:overflow


java/common/src/main/java/org/apache/tsfile/utils/RamUsageEstimator.java (1 line):
	- line 529: // TODO: No alignments based on field type/ subclass fields alignments?


java/tsfile/src/main/java/org/apache/tsfile/common/conf/TSFileConfig.java (1 line):
	- line 81: // TODO: configurable but unchangeable


cpp/src/writer/tsfile_writer.cc (1 line):
	- line 998: // TODO make sure ret is meaningful to SDK user


cpp/src/common/statistic.h (1 line):
	- line 35: * TODO: do we have to update end_time_/last_value_ every time?


cpp/src/reader/chunk_reader.cc (1 line):
	- line 90: // TODO configurable


cpp/src/reader/scan_iterator.h (1 line):
	- line 139: // TODO may bind TsFileIOReader on OpenFile ?


cpp/src/reader/aligned_chunk_reader.h (1 line):
	- line 131: // TODO: support reading more than one measurement in AlignedChunkReader.


cpp/src/reader/block/single_device_tsblock_reader.cc (1 line):
	- line 161: nullptr /*TODO: || field_filter_->satisfy(column_contexts)*/) {


cpp/src/reader/aligned_chunk_reader.cc (1 line):
	- line 115: // TODO configurable


cpp/src/compress/compressor.h (1 line):
	- line 47: // TODO other style API


python/VersionUpdater.groovy (1 line):
	- line 38: // TODO: When releasing, we might need to manually add this file to the release preparation commit.


java/tsfile/src/main/java/org/apache/tsfile/read/query/executor/TableQueryExecutor.java (1 line):
	- line 135: // TODO: get measurements in the filter and add them to measurementColumns


cpp/src/writer/time_page_writer.cc (1 line):
	- line 45: // TODO: Maybe use time_bs as compressed_buf.


cpp/src/common/tsfile_mgr.h (1 line):
	- line 29: // TODO use header file instead


cpp/src/reader/column_mapping.h (1 line):
	- line 48: // TODO: get measurements in the filter and add them to


java/tsfile/src/main/java/org/apache/tsfile/encoding/decoder/BitmapDecoder.java (1 line):
	- line 98: // TODO maybe this.byteCache = buffer is faster, but not safe


cpp/src/file/tsfile_io_writer.h (1 line):
	- line 77: // TODO: support encrypt


java/tsfile/src/main/java/org/apache/tsfile/file/metadata/PlainDeviceID.java (1 line):
	- line 35: // TODO: rename to PathDeviceID (countering TupleDeviceID or ArrayDeviceID)