| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.fs.statistics; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| |
| /** |
| * These are common statistic names. |
| * <p> |
| * When adding new common statistic name constants, please make them unique. |
| * By convention, they are implicitly unique: |
| * <ul> |
| * <li> |
| * The name of the constants are uppercase, words separated by |
| * underscores. |
| * </li> |
| * <li> |
| * The value of the constants are lowercase of the constant names. |
| * </li> |
| * </ul> |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public final class StreamStatisticNames { |
| |
| /** |
| * Count of times the TCP stream was aborted. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_ABORTED = "stream_aborted"; |
| |
| /** |
| * Bytes read from an input stream in read()/readVectored() calls. |
| * Does not include bytes read and then discarded in seek/close etc. |
| * These are the bytes returned to the caller. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_BYTES |
| = "stream_read_bytes"; |
| |
| /** |
| * Count of bytes discarded by aborting an input stream . |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_BYTES_DISCARDED_ABORT |
| = "stream_read_bytes_discarded_in_abort"; |
| |
| /** |
| * Count of bytes read and discarded when closing an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_BYTES_DISCARDED_CLOSE |
| = "stream_read_bytes_discarded_in_close"; |
| |
| /** |
| * Count of times the TCP stream was closed. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_CLOSED = "stream_read_closed"; |
| |
| /** |
| * Total count of times an attempt to close an input stream was made. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_CLOSE_OPERATIONS |
| = "stream_read_close_operations"; |
| |
| /** |
| * Total count of times an input stream to was opened. |
| * For object stores, that means the count a GET request was initiated. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_OPENED = "stream_read_opened"; |
| |
| /** |
| * Count of exceptions raised during input stream reads. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_EXCEPTIONS = |
| "stream_read_exceptions"; |
| |
| /** |
| * Count of readFully() operations in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_FULLY_OPERATIONS |
| = "stream_read_fully_operations"; |
| |
| /** |
| * Count of read() operations in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_OPERATIONS = |
| "stream_read_operations"; |
| |
| /** |
| * Count of readVectored() operations in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_VECTORED_OPERATIONS = |
| "stream_read_vectored_operations"; |
| |
| /** |
| * Count of bytes discarded during readVectored() operation |
| * in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_VECTORED_READ_BYTES_DISCARDED = |
| "stream_read_vectored_read_bytes_discarded"; |
| |
| /** |
| * Count of incoming file ranges during readVectored() operation. |
| * Value: {@value} |
| */ |
| public static final String STREAM_READ_VECTORED_INCOMING_RANGES = |
| "stream_read_vectored_incoming_ranges"; |
| /** |
| * Count of combined file ranges during readVectored() operation. |
| * Value: {@value} |
| */ |
| public static final String STREAM_READ_VECTORED_COMBINED_RANGES = |
| "stream_read_vectored_combined_ranges"; |
| |
| /** |
| * Count of incomplete read() operations in an input stream, |
| * that is, when the bytes returned were less than that requested. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_OPERATIONS_INCOMPLETE |
| = "stream_read_operations_incomplete"; |
| |
| /** |
| * count/duration of aborting a remote stream during stream IO |
| * IO. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_REMOTE_STREAM_ABORTED |
| = "stream_read_remote_stream_aborted"; |
| |
| /** |
| * count/duration of closing a remote stream, |
| * possibly including draining the stream to recycle |
| * the HTTP connection. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_REMOTE_STREAM_DRAINED |
| = "stream_read_remote_stream_drain"; |
| |
| /** |
| * Count of version mismatches encountered while reading an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_VERSION_MISMATCHES |
| = "stream_read_version_mismatches"; |
| |
| /** |
| * Count of executed seek operations which went backwards in a stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SEEK_BACKWARD_OPERATIONS = |
| "stream_read_seek_backward_operations"; |
| |
| /** |
| * Count of bytes moved backwards during seek operations |
| * in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SEEK_BYTES_BACKWARDS |
| = "stream_read_bytes_backwards_on_seek"; |
| |
| /** |
| * Count of bytes read and discarded during seek() in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SEEK_BYTES_DISCARDED = |
| "stream_read_seek_bytes_discarded"; |
| |
| /** |
| * Count of bytes skipped during forward seek operations. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SEEK_BYTES_SKIPPED |
| = "stream_read_seek_bytes_skipped"; |
| |
| /** |
| * Count of executed seek operations which went forward in |
| * an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SEEK_FORWARD_OPERATIONS |
| = "stream_read_seek_forward_operations"; |
| |
| /** |
| * Count of times the seek policy was dynamically changed |
| * in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SEEK_POLICY_CHANGED = |
| "stream_read_seek_policy_changed"; |
| |
| /** |
| * Count of seek operations in an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SEEK_OPERATIONS = |
| "stream_read_seek_operations"; |
| |
| /** |
| * Count of {@code InputStream.skip()} calls. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SKIP_OPERATIONS = |
| "stream_read_skip_operations"; |
| |
| /** |
| * Count bytes skipped in {@code InputStream.skip()} calls. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_SKIP_BYTES = |
| "stream_read_skip_bytes"; |
| |
| /** |
| * Total count of bytes read from an input stream. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_TOTAL_BYTES |
| = "stream_read_total_bytes"; |
| |
| /** |
| * Count of calls of {@code CanUnbuffer.unbuffer()}. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_READ_UNBUFFERED |
| = "stream_read_unbuffered"; |
| |
| /** |
| * "Count of stream write failures reported. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_WRITE_EXCEPTIONS = |
| "stream_write_exceptions"; |
| |
| /** |
| * Count of failures when finalizing a multipart upload: |
| * {@value}. |
| */ |
| public static final String STREAM_WRITE_EXCEPTIONS_COMPLETING_UPLOADS = |
| "stream_write_exceptions_completing_upload"; |
| |
| /** |
| * Count of block/partition uploads complete. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_WRITE_BLOCK_UPLOADS |
| = "stream_write_block_uploads"; |
| |
| /** |
| * Count of number of block uploads aborted. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_WRITE_BLOCK_UPLOADS_ABORTED |
| = "stream_write_block_uploads_aborted"; |
| |
| /** |
| * Count of block/partition uploads active. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_WRITE_BLOCK_UPLOADS_ACTIVE |
| = "stream_write_block_uploads_active"; |
| |
| /** |
| * Gauge of data queued to be written. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_WRITE_BLOCK_UPLOADS_BYTES_PENDING = |
| "stream_write_block_uploads_data_pending"; |
| |
| /** |
| * Count of number of block uploads committed. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_WRITE_BLOCK_UPLOADS_COMMITTED |
| = "stream_write_block_uploads_committed"; |
| |
| /** |
| * Gauge of block/partitions uploads queued to be written. |
| * Value: {@value}. |
| */ |
| public static final String STREAM_WRITE_BLOCK_UPLOADS_PENDING |
| = "stream_write_block_uploads_pending"; |
| |
| |
| /** |
| * "Count of bytes written to output stream including all not yet uploaded. |
| * {@value}. |
| */ |
| public static final String STREAM_WRITE_BYTES |
| = "stream_write_bytes"; |
| |
| /** |
| * Count of total time taken for uploads to complete. |
| * {@value}. |
| */ |
| public static final String STREAM_WRITE_TOTAL_TIME |
| = "stream_write_total_time"; |
| |
| /** |
| * Total queue duration of all block uploads. |
| * {@value}. |
| */ |
| public static final String STREAM_WRITE_QUEUE_DURATION |
| = "stream_write_queue_duration"; |
| |
| public static final String STREAM_WRITE_TOTAL_DATA |
| = "stream_write_total_data"; |
| |
| /** |
| * Number of bytes to upload from an OutputStream. |
| */ |
| public static final String BYTES_TO_UPLOAD |
| = "bytes_upload"; |
| |
| /** |
| * Number of bytes uploaded successfully to the object store. |
| */ |
| public static final String BYTES_UPLOAD_SUCCESSFUL |
| = "bytes_upload_successfully"; |
| |
| /** |
| * Number of bytes failed to upload to the object store. |
| */ |
| public static final String BYTES_UPLOAD_FAILED |
| = "bytes_upload_failed"; |
| |
| /** |
| * Total time spent on waiting for a task to complete. |
| */ |
| public static final String TIME_SPENT_ON_TASK_WAIT |
| = "time_spent_task_wait"; |
| |
| /** |
| * Number of task queue shrunk operations. |
| */ |
| public static final String QUEUE_SHRUNK_OPS |
| = "queue_shrunk_ops"; |
| |
| /** |
| * Number of times current buffer is written to the service. |
| */ |
| public static final String WRITE_CURRENT_BUFFER_OPERATIONS |
| = "write_current_buffer_ops"; |
| |
| /** |
| * Total time spent on completing a PUT request. |
| */ |
| public static final String TIME_SPENT_ON_PUT_REQUEST |
| = "time_spent_on_put_request"; |
| |
| /** |
| * Number of seeks in buffer. |
| */ |
| public static final String SEEK_IN_BUFFER |
| = "seek_in_buffer"; |
| |
| /** |
| * Number of bytes read from the buffer. |
| */ |
| public static final String BYTES_READ_BUFFER |
| = "bytes_read_buffer"; |
| |
| /** |
| * Total number of remote read operations performed. |
| */ |
| public static final String REMOTE_READ_OP |
| = "remote_read_op"; |
| |
| /** |
| * Total number of bytes read from readAhead. |
| */ |
| public static final String READ_AHEAD_BYTES_READ |
| = "read_ahead_bytes_read"; |
| |
| /** |
| * Total number of bytes read from remote operations. |
| */ |
| public static final String REMOTE_BYTES_READ |
| = "remote_bytes_read"; |
| |
| /** |
| * Total number of Data blocks allocated by an outputStream. |
| */ |
| public static final String BLOCKS_ALLOCATED |
| = "blocks_allocated"; |
| |
| /** |
| * Total number of Data blocks released by an outputStream. |
| */ |
| public static final String BLOCKS_RELEASED |
| = "blocks_released"; |
| |
| private StreamStatisticNames() { |
| } |
| |
| } |