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PARQUET-2374: Add metrics support for parquet file reader (#1187)
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41 changes: 41 additions & 0 deletions
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parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ParquetFileReaderMetrics.java
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| /* | ||
| * 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.parquet.hadoop; | ||
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| public enum ParquetFileReaderMetrics { | ||
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| // metrics | ||
| ReadTime("time spent in reading Parquet file from storage"), | ||
| SeekTime("time spent in seek when reading Parquet file from storage"), | ||
| ReadSize("read size when reading Parquet file from storage (MB)"), | ||
| ReadThroughput("read throughput when reading Parquet file from storage (MB/sec)"), | ||
| DecompressTime("time spent in block decompression"), | ||
| DecompressSize("decompressed data size (MB)"), | ||
| DecompressThroughput("block decompression throughput (MB/sec)"); | ||
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| private final String desc; | ||
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| ParquetFileReaderMetrics(String desc) { | ||
| this.desc = desc; | ||
| } | ||
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| public String description() { | ||
| return desc; | ||
| } | ||
| } |
46 changes: 46 additions & 0 deletions
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parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ParquetMetricsCallback.java
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| /* | ||
| * 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.parquet.hadoop; | ||
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| import org.apache.hadoop.classification.InterfaceStability; | ||
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| /** | ||
| * A simple interface to pass basic metric values by name to any implementation. Typically, an | ||
| * implementation of this interface will serve as a bridge to pass metric values on | ||
| * to the metrics system of a distributed engine (hadoop, spark, etc). | ||
| * <br> | ||
| * Development Note: This interface should provide a default implementation for any new metric tracker | ||
| * added to allow for backward compatibility | ||
| * <br> | ||
| * e.g. | ||
| * <br> | ||
| * <code>default addMaximum(key, value) { } ; </code> | ||
| */ | ||
| @InterfaceStability.Unstable | ||
| public interface ParquetMetricsCallback { | ||
| void setValueInt(String name, int value); | ||
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| void setValueLong(String name, long value); | ||
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| void setValueFloat(String name, float value); | ||
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| void setValueDouble(String name, double value); | ||
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| void setDuration(String name, long value); | ||
| } |