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[SPARK-16071][SQL] Checks size limit when doubling the array size in BufferHolder #13829
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| Original file line number | Diff line number | Diff line change |
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@@ -45,7 +45,12 @@ public BufferHolder(UnsafeRow row) { | |
| } | ||
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| public BufferHolder(UnsafeRow row, int initialSize) { | ||
| this.fixedSize = UnsafeRow.calculateBitSetWidthInBytes(row.numFields()) + 8 * row.numFields(); | ||
| int bitsetWidthInBytes = UnsafeRow.calculateBitSetWidthInBytes(row.numFields()); | ||
| if (row.numFields() > (Integer.MAX_VALUE - initialSize) / 8) { | ||
| throw new UnsupportedOperationException( | ||
| "Cannot create BufferHolder from input UnsafeRow because it is too big."); | ||
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| } | ||
| this.fixedSize = bitsetWidthInBytes + 8 * row.numFields(); | ||
| this.buffer = new byte[fixedSize + initialSize]; | ||
| this.row = row; | ||
| this.row.pointTo(buffer, buffer.length); | ||
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@@ -55,6 +60,11 @@ public BufferHolder(UnsafeRow row, int initialSize) { | |
| * Grows the buffer by at least neededSize and points the row to the buffer. | ||
| */ | ||
| public void grow(int neededSize) { | ||
| if (neededSize > Integer.MAX_VALUE / 2 - totalSize()) { | ||
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| throw new UnsupportedOperationException( | ||
| "Cannot grow BufferHolder by size " + neededSize + " because the size after growing " + | ||
| "exceeds size limitation " + Integer.MAX_VALUE / 2); | ||
| } | ||
| final int length = totalSize() + neededSize; | ||
| if (buffer.length < length) { | ||
| // This will not happen frequently, because the buffer is re-used. | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.spark.sql.catalyst.expressions.codegen | ||
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| import org.apache.spark.SparkFunSuite | ||
| import org.apache.spark.sql.catalyst.expressions.UnsafeRow | ||
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| class BufferHolderSuite extends SparkFunSuite { | ||
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Contributor
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This is a good starting point! Most of the low-level codegen utils are not tested, e.g. |
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| test("SPARK-16071 Check the size limit to avoid integer overflow") { | ||
| var e = intercept[UnsupportedOperationException] { | ||
| new BufferHolder(new UnsafeRow(Int.MaxValue / 8)) | ||
| } | ||
| assert(e.getMessage.contains("it is too big")) | ||
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| val holder = new BufferHolder(new UnsafeRow(1000)) | ||
| holder.grow(1000) | ||
| e = intercept[UnsupportedOperationException] { | ||
| holder.grow(2e10.toInt) | ||
| } | ||
| assert(e.getMessage.contains("exceeds size limitation")) | ||
| } | ||
| } | ||
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maybe
nullBitsLengthis a better name?